US20050164805A1 - Golf putter - Google Patents
Golf putter Download PDFInfo
- Publication number
- US20050164805A1 US20050164805A1 US10/767,323 US76732304A US2005164805A1 US 20050164805 A1 US20050164805 A1 US 20050164805A1 US 76732304 A US76732304 A US 76732304A US 2005164805 A1 US2005164805 A1 US 2005164805A1
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- Prior art keywords
- sole
- region
- specific gravity
- insert
- putter
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/06—Heads adjustable
- A63B53/065—Heads adjustable for putters
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0441—Heads with visual indicators for aligning the golf club
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/02—Ballast means for adjusting the centre of mass
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B2053/0491—Heads with added weights, e.g. changeable, replaceable
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0416—Heads having an impact surface provided by a face insert
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0433—Heads with special sole configurations
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0487—Heads for putters
Definitions
- the present invention pertains to golf putters, and more specifically, to putter heads for golf putters.
- the most commonly used club in a typical golf bag is the putter. Approximately one-third to one half of a golfer's strokes on the golf course are taken using a putter.
- the design of golf putters varies widely. Putter heads can be manufactured having different weighting characteristics, sizes, shapes and colors. Putter heads have progressed from a simple blade-shaped design to more sophisticated designs such as mallet-type putter heads which can include particular weight distributions to improve performance.
- the moment of inertia is defined as the tendency of the putter head to rotate about its center of gravity when impacting a golf ball at locations spaced from the center of gravity. If the putter head is more resistant to twisting upon an off-center impact with the ball, there is a higher likelihood that the ball will move toward the intended target. Thus, a higher moment of inertia translates into greater forgiveness for off-center ball-striking, e.g. increased directional control of the ball.
- the weight distribution of a putter head can impact the spin of the ball following contact with the face of the putter.
- a putter head that provides the ball with a certain amount of topspin while reducing the likelihood of sidespin or skidding along the surface of the green is desired.
- putter heads have been formed entirely of metal, such as stainless steel or other alloys.
- Current putter heads can include face inserts formed from materials that are different than the remainder of the putter head.
- achieving the precise weight and balance, along with a high moment of inertia to provide a more optimal loft and a truer roll of the ball following impact has historically been difficult, if not elusive.
- the need exists to provide a putter head having improved weighting and balance characteristics for a more consistent putting stroke and improved loft and roll of the ball after impact.
- a further need exists to provide a putter head having a high moment of inertia for to maintain a truer roll and decreased twisting of the putter head upon impact with the ball.
- Another need exists to provide a putter that is easy to use and cost-efficient to manufacture.
- a golf putter in accordance with the present invention includes a putter body, a heel weight, a toe weight and a first sole insert.
- the putter body has a centrally positioned transition plane that demarcates or divides the putter body into a heel region and a toe region.
- the putter body includes a sole region that defines a first sole cavity.
- the putter body is formed substantially from a material having a first specific gravity.
- the heel weight is secured to the heel region, and is formed substantially from a material having a second specific gravity that is greater than the first specific gravity.
- the toe weight is secured to the toe region, and is formed substantially from a material having a third specific gravity that is greater than the first specific gravity.
- the first sole insert is inserted into the first sole cavity, and is formed substantially from a material having a fourth specific gravity that is greater than the first specific gravity.
- the golf putter in another embodiment, includes a putter body, a first sole insert and a second sole insert.
- the putter body includes a sole region that defines a first sole cavity and a second sole cavity, with each sole cavity being positioned partly in the heel region and partly in the toe region of the putter body.
- the first sole insert is inserted into the first sole cavity
- the second sole insert is inserted into the second sole cavity.
- the golf putter includes a putter body, a first sole insert and a second sole insert.
- the first sole insert has a first specific gravity
- the second sole insert has a second specific gravity that is greater than the first specific gravity.
- the present invention also includes a method for manufacturing a putter head of a golf putter.
- FIG. 1 is a perspective view of a golf putter having features of the present invention
- FIG. 2A is a perspective view of a first embodiment of a putter head having features of the present invention
- FIG. 2B is an exploded top view of the putter head illustrated in FIG. 2A ;
- FIG. 2C is an exploded bottom view of the putter head illustrated in FIG. 2A ;
- FIG. 2D is a bottom perspective view of the putter head illustrated in FIG. 2A ;
- FIG. 2E is a cross-sectional view of a portion of the putter head taken on line 2 E- 2 E in FIG. 2A ;
- FIG. 3A is a perspective view of a second embodiment of a putter head having features of the present invention.
- FIG. 3B is an exploded top view of the putter head illustrated in FIG. 3A ;
- FIG. 3C is an exploded bottom view of the putter head illustrated in FIG. 3A ;
- FIG. 3D is a bottom perspective view of the putter head illustrated in FIG. 3A ;
- FIG. 3E is a side view of the putter head illustrated in FIG. 3A ;
- FIG. 4A is a perspective view of a third embodiment of a putter head having features of the present invention.
- FIG. 4B is an exploded view of the putter head illustrated in FIG. 4A ;
- FIG. 4C is a bottom perspective view of the golf putter head illustrated in FIG. 4A ;
- FIG. 5A is a perspective view of a fourth embodiment of a golf putter head having features of the present invention.
- FIG. 5B is an exploded view of the golf putter head illustrated in FIG. 5A ;
- FIG. 5C is a bottom perspective view of the golf putter head illustrated in FIG. 5A .
- FIG. 1 is a perspective view of an embodiment of a golf putter 10 having features of the present invention, including a grip 12 , a shaft 14 and a putter head 16 that can include an attached hosel 18 .
- the grip 12 is positioned on the shaft 14 .
- the grip 12 can be formed from rubber, leather, plastic or other suitable materials that provide a user with a sufficient grip 12 on the golf putter 10 .
- the shaft 14 is secured to the hosel 18 of the putter head 16 .
- the putter head 16 does not include a hosel 18 , and the shaft 14 can be directly or indirectly secured to the putter head 16 by other suitable means.
- the putter head 16 includes a heel 16 H and a toe 16 T.
- FIG. 2A is a perspective view of a first embodiment of the putter head 16 .
- the design of the putter head 16 can be varied to suit the design requirements of the putter 10 .
- the putter head 16 generally includes the hosel 18 , a putter body 20 and a plurality of inserts.
- the putter body 20 is defined as a generally unitary structure that forms a portion of the putter head 16 , and which receives one or more of the inserts, as described in greater detail below.
- the putter body 20 defines one or more cavities (not shown in FIG. 2A ) that each receives one insert. The cavities are also described in greater detail below.
- the putter head 16 includes a face region 22 , a back region 24 , an upper region 26 and a sole region 28 .
- the face region 22 is spaced apart from the back region 24 .
- the upper region 26 is spaced apart from the sole region 28 .
- the sole region 28 and the upper region 26 are formed as a unitary structure such that there is no gap between the sole region 28 and the upper region 26 .
- the upper region 26 can be one side of a portion of the putter body 20
- the sole region 28 can be another side of the portion of the putter body 20 , which generally faces in a direction opposite that of the upper region 26 .
- the putter head 16 can also be divided into a heel region 30 that includes the heel 16 H, and a toe region 32 that includes the toe 16 T.
- the heel region 30 is defined as at least a portion of the putter head 16 that is more proximal to the feet of one using the putter 10 during a typical putting stroke
- the toe region 32 Is defined as at least a portion of the putter head 16 that is more distal to the feet of one using the putter 10 during a typical putting stroke.
- the heel region 30 can include a portion of the face region 22 , the back region 24 , the upper region 26 and the sole region 28 .
- the toe region 32 can also include a different portion of the face region 22 , the back region 24 , the upper region 26 and the sole region 28 .
- a centrally positioned transition plane 34 (shown as a dashed plane) is illustrated in FIG. 2A which approximately demarcates the putter head 16 into the heel region 30 and the toe region 32 .
- the transition plane 34 is a theoretical plane that forms a boundary between the heel region 30 and the toe region 32 . In other words, the transition plane 34 is where the heel region 30 and the toe region 32 meet.
- the putter body 20 can be formed from a variety of materials.
- the putter body 20 can be formed from metals, metal alloys, plastics, ceramics, composites, wood, or any other suitably strong materials.
- the putter body 20 is formed from stainless steel.
- the putter body 20 can be cast, milled, molded, carved, ground, sanded or otherwise formed and/or shaped in any other suitable manner known in the art.
- the face region 22 includes a generally planar face surface 36 (illustrated in FIG. 2D ) for striking a golf ball (not shown).
- the face surface 36 can be flat or slightly curved, for example.
- the face surface 36 can form an angle with the upper region 26 within the range of between approximately 90 and 100 degrees.
- the face surface 36 can form an angle with the sole region 28 within the range of between approximately 80 and 90 degrees. More specifically, in one embodiment, the face surface 36 can form an angle within the range of approximately 0 to 10 degrees from vertical.
- the face surface 36 can be within the range of 2.0 to 8.0 degrees, 3.0 to 7.0 degrees, 4.0 to 6.0 degrees, or approximately 5.0 degrees from vertical.
- the back region 24 extends substantially vertically between the upper region 26 and the sole region 28 on a backside of the putter head 16 .
- the back region 24 is substantially arc-shaped, and can have a radius of curvature that is approximately equal to or somewhat larger than that of a standard golf ball.
- the back region 24 can be parabolic or can have another configuration.
- the upper region 26 extends between the face region 22 and the back region 24 .
- a portion of the upper region 26 can have a somewhat semicircular shape.
- the upper region 26 can be curved or arc-shaped near the back region 24 , and can be relatively linear near the face region 22 , as illustrated in FIG. 2A .
- the upper region 26 can have a substantially uniform thickness, or can have a thickness that varies.
- the upper region 26 can also include one or more upper region inserts 38 .
- the size and shape of the upper region insert can vary.
- the upper region insert 38 illustrated in FIG. 2A is substantially circular-shaped or disc-shaped, and can have a diameter that is similar to or somewhat smaller than the diameter of a standard golf ball.
- the diameter of the upper region insert 38 is less than 1.60 inches and greater than approximately 1.00 inches.
- the diameter of the upper region insert 38 is less than approximately 1.55 inches and greater than approximately 1.25 inches.
- the diameter of the upper region insert 38 is less than approximately 1.52 inches and greater than approximately 1.40 inches.
- the diameter of the upper region insert 38 is approximately 1.50 inches.
- the upper region insert can be another shape, such as oval, triangular, rectangular, hexagonal, octagonal or another suitable geometry.
- the upper region insert 38 can be formed from materials having a different specific gravity and/or density than the materials that substantially form the putter body 20 .
- the upper region insert 38 is formed from materials having a lower specific gravity and/or density than the materials that substantially form the remainder of the putter body 20 .
- the upper region insert 38 can be formed from plastic, aluminum or other alloys, epoxy resin, or other suitable relatively lightweight materials.
- the thickness of the upper region insert 38 can vary depending upon the desired weighting, balance, center of gravity and/or moment of inertia of the putter head 16 .
- the upper region insert 38 can be formed from the same material used to form the putter body 20 , such as stainless steel, for example. Additionally, the upper region insert 38 can be at least partly the color of a standard white or other colored golf ball, or can have another suitable color or appearance.
- the upper region insert 38 can include an alignment guide 40 that assists the golfer in aligning a putt and/or increases the likelihood of a truer putting stroke.
- the alignment guide 40 can be an impression or an indentation in a top side 42 of the upper region insert 38 .
- the alignment guide 40 can include a black or other colored marking on the top side 42 of the upper region insert 38 .
- the alignment guide 40 is substantially linear, and/or can be substantially rectangular in shape.
- the alignment guide 40 can be triangular, arrow-shaped, circular, oval, or can have another suitable geometry that assists the golfer in aligning a putt and/or increasing the likelihood of a truer putting stroke.
- the sole region 28 extends between the face region 22 and the back region 24 .
- the configuration of the sole region 28 can vary.
- the thickness of the sole region 28 can be substantially uniform from heel 16 H to toe 16 T.
- the thickness of the sole region 28 can vary moving from heel 16 H to toe 16 T.
- the sole region 28 can have a thickness that is equal to or greater than a thickness of the upper region 26 , which can provide the putter head 16 with an overall lower center of gravity.
- FIG. 2B is an exploded top view of an embodiment of the putter head 16 .
- the face region 22 includes one or more heel weights 44 H, one or more toe weights 44 T, an intermediate face insert 441 that can form a portion of the face surface 36 (illustrated in FIG. 2D ), and a backside face cavity 45 that is positioned on a backside 47 of the face region 22 .
- the putter head 16 includes three substantially similar heel weights 44 H and three substantially similar toe weights 44 T. It should be recognized, however, that greater or fewer than three heel weights 44 H and/or toe weights 44 T can be used in the putter head 16 provided herein.
- the material used to form the heel and toe weights 44 H, 44 T can affect the balance, center of gravity, and/or moment of inertia of the putter head 16 .
- the heel weights 44 H and/or toe weights 44 T can be formed substantially from materials having a greater specific gravity than a specific gravity of the material used to substantially form at least a portion of the putter body 20 .
- the specific gravity of the heel weights 44 H and/or toe weights 44 T can be at least approximately 50 percent greater than the specific gravity of the putter body 20 .
- the specific gravity of the heel weights 44 H and/or toe weights 44 T can be at least approximately 100 percent, 150 percent, 200 percent, 250 percent, 300 percent, 350 percent or 400 percent greater than the specific gravity of the putter body 20 , as non-exclusive examples. In yet another alternative embodiment, the specific gravity of the heel weights 44 H and/or toe weights 44 T can be greater or less than the stated percentages relative to the specific gravity of the putter body 20 .
- the heel weights 44 H and/or toe weights 44 T can be formed substantially from tungsten, lead, copper or other suitable materials, as non-exclusive examples.
- the disparity in specific gravity between the heel weights 44 H and/or toe weights 44 T on the one hand, and the putter body 20 on the other hand, in conjunction with the positioning of the heel weights 44 H and the toe weights 44 T, provides stability to the putter head 16 during putting that inhibits a twisting moment which can result in an errant putt.
- the heel weights 44 H and the toe weights 44 T are substantially identical in shape and size.
- the heel weights 44 H can be a different shape and/or size than the toe weights 44 T.
- each of the heel weights 44 H can have a different shape, and/or each of the toe weights 44 T can have a different shape.
- the heel weights 44 H are arranged in somewhat of a triangular pattern.
- Each heel weight 44 H has a depth 46 H that can be substantially similar, or can vary to influence the weighting of the putter head. For example, by varying the depths 46 H, and thus the weight of one or more of the heel weights 44 H, the weighting of the putter head 16 can be varied, i.e. toward the heel edge 31 or toward the transition plane 34 , for instance.
- each toe weight 44 T is arranged in somewhat of a triangular pattern.
- Each toe weight 44 T has a depth 46 T that can be substantially similar, or can vary to influence the weighting of the putter head 16 .
- the weighting of the putter head 16 can be varied, i.e. toward the toe edge 33 or toward the transition plane 34 , for instance.
- heel weights 44 H and toe weights 44 T having different respective depths 46 H, 46 T, a lower center of gravity can be achieved, thereby providing a truer roll and spin of the golf ball off the face region 22 of the putter head 16 .
- the shape, size and positioning of the heel weights 44 H and the toe weights 44 T in conjunction with other components of the putter head 16 can also affect the balance, center of gravity, and/or moment of inertia of the putter head 16 , each of which can provide a truer roll and topspin of the golf ball, as explained in greater detail below.
- the intermediate face insert 441 can be substantially formed from a material having a lower specific gravity than the specific gravity of the material that substantially forms the putter body 20 .
- the intermediate face insert 441 can be formed from aluminum, various plastics, ceramic, or other relatively lightweight materials. With this design, the weight of the putter head 16 is distributed away from the ball-striking surface, and toward the heel 16 H, the toe 16 T and the back region 24 .
- the back region 24 includes a back upper edge 24 U, a back lower edge 24 L, a back heel edge 24 H, a back toe edge 24 T and a partition member 25 .
- the back region 24 can have an arc length that varies depending on the design requirements of the putter 10 .
- the arc length is greater than approximately 30 degrees and less than approximately 180 degrees.
- the arc length of the back region 24 is greater than approximately 60 degrees and less than approximately 135 degrees.
- the arc length is greater than approximately 75 degrees and less than approximately 120 degrees.
- the arc length is greater than approximately 90 degrees and less than approximately 105 degrees.
- the arc length is approximately 100 degrees. It is recognized by those skilled in the art that varying the arc length can advantageously influence the vibratory characteristics of the putter head 16 on impact with a golf ball, as well as the overall weight, balance, stiffness, flex, center of gravity and/or moment of inertia of the putter head 16 .
- the partition member 25 can extend vertically between the upper region 26 and the sole region 28 .
- the partition member 25 can extend from the back region 24 to the backside 47 of the face region 22 .
- the partition member 25 can be substantially T-shaped, and can include a partition insert 27 and a partition wall 29 .
- the partition insert 27 is generally parallel to the face surface 36
- the partition wall 29 can be substantially perpendicular to the partition insert 27 .
- the partition insert 27 is inserted and fits into the backside face cavity 45 of the backside 47 of the face region 22 .
- the partition insert 27 can be formed from a relatively lightweight material having a specific gravity that is lower than the specific gravity of the material used to form the putter body 20 .
- the partition insert 27 can be formed from various plastics, aluminum, other lightweight metal alloys, or any other suitably lightweight materials. With this design, the weight of the face region 22 is reduced and distributed to other more perimeter regions of the putter head 16 .
- the partition wall 29 is approximately in alignment with the transition plane 34 (illustrated in FIG. 2A ) and the alignment guide 40 .
- the positioning of the partition wall 29 can provide additional stability during putting given the location of the partition wall 29 being in line with the approximate ball-striking location on the face region 22 .
- the partition wall 29 can be formed from a relatively lightweight material having a specific gravity that is lower than the specific gravity of the material used to form the putter body 20 .
- the partition wall 29 can be formed from various plastics, aluminum, other lightweight metal alloys, or any other suitably lightweight materials. With this design, the overall weight of the putter head 16 is reduced and is redistributed to other more perimeter regions of the putter head 16 .
- the partition member 25 does not include a partition insert 27 , and the partition wall 29 is secured directly to the backside 47 of the face region 22 .
- the partition member 25 can include two or more spaced apart partition walls 29 .
- two partition walls 29 are spaced apart the approximate diameter of a standard golf ball, and are positioned on either side of the transition plane 34 .
- the spacing between the adjacent partition walls 29 can be greater or less than this distance.
- the back region 24 can be formed from the same material used to form the remainder of the putter body 20 .
- both the back region 24 and the remainder of the putter body 20 can be formed from stainless steel.
- the back region can be formed from a different material having a greater or lower specific gravity than the remainder of the putter body 20 .
- the back region 24 is formed from a material having a greater specific gravity than the remainder of the putter body 20 , such as tungsten, copper, or another suitable material. With this design, the shape and the materials used to form the back region 24 effectively concentrate a portion of the weight of the putter head 16 near a perimeter of the putter head 16 , thereby increasing the moment of inertia of the putter head 16 .
- FIG. 2B also illustrates that the upper region 26 also defines an upper region cavity 48 that receives the upper region insert 38 .
- the upper region cavity 48 is sized and shaped to accommodate the upper region insert 38 .
- the upper region insert 38 can be fixedly or removably secured to the upper region cavity 48 with an adhesive material or by another suitable method.
- the top side of the upper region insert 38 is approximately flush with a top surface of the upper region 26 .
- the upper region insert 38 can be threadedly secured to the upper region cavity 48 , thereby allowing the user to rotate or remove the upper region insert 38 as necessary.
- the upper region insert 38 can be formed as a unitary structure with the remainder of the upper region 26 , in which case the upper region cavity 48 is omitted.
- FIG. 2C is a bottom exploded view of the putter head 16 illustrated in FIG. 2A .
- the putter body 20 includes one or more heel cavities 58 H that each receives one of the heel weights 44 H. Additionally, the putter body 20 includes one or more toe cavities 58 T that each receives one of the toe weights 44 T. Further, the putter body 20 includes an intermediate face cavity 58 I that receives the intermediate face insert 441 .
- the face inserts 44 H, 44 T, 441 can be adhered to the putter body 20 using any one of a variety of methods.
- one or more of the face inserts 44 H, 44 T, 44 I can be adhesively secured to the putter body 20 .
- one or more of the face inserts 44 H, 44 T, 441 can be welded, or can include a top coat (not shown) of plastic or other material that secures the face inserts 44 H, 44 T, 441 within the respective face cavities 58 H, 58 T, 581 .
- the face inserts 44 H, 44 T, 441 can be removably snapped or otherwise held into place within the face cavities 58 H, 58 T, 581 . It is recognized that any suitable method can be used to secure the face inserts 44 H, 44 T, 441 to the putter body 20 , and that the foregoing examples are merely provided as non-exclusive, representative methods.
- the putter head 16 can include one or more sole cavities 50 positioned within the sole region 28 . It is recognized that the positioning and dimensions of the sole cavity 50 can vary from the embodiments illustrated herein depending upon the design requirements of the golf putter 10 and the putter head 16 .
- the sole cavity 56 illustrated in FIG. 2C has a sole cavity perimeter 52 that is defined entirely within the sole region 28 . In other words, in this embodiment, the sole cavity perimeter 52 of the sole cavity 50 does not extend to the face region 22 or the back region 24 of the putter head 16 . In an alternative embodiment, the sole cavity perimeter 52 of the sole cavity 50 can extend to the face region 22 and/or the back region 24 of the putter head 16 .
- the sole cavity 50 has a generally rectangular footprint.
- the footprint of the sole cavity 50 can be oval, circular, triangular, or any other suitable polygonal shape.
- the depth of the sole cavity 50 illustrated in FIG. 2C is substantially uniform.
- the depth of the sole cavity 50 can vary.
- the sole cavity 50 can be substantially wedge-shaped, concave, convex, U-shaped, V-shaped, or can have another suitable configuration.
- the putter head 16 includes a sole insert 54 that is inserted into the sole cavity 50 .
- the positioning and dimensions of the sole insert 54 can vary.
- the sole insert 54 is substantially flush with a sole surface 56 of the sole region 28 .
- the sole insert 54 can follow the contour of the sole surface 56 to provide a smooth sole region 28 for moving along a putting surface.
- the sole insert 54 can be recessed from the sole surface 56 .
- the materials used to form the sole insert 54 can vary.
- the sole insert 54 can be formed from a relatively lightweight material such as polyurethane, other plastic materials or epoxy compounds.
- the sole insert 54 can have a specific gravity that is lower than a specific gravity of the putter body 20 .
- the weighting of the putter head 16 is altered so that more of the weight of the putter head is distributed toward the heel region 30 , the toe region 32 and the back region 24 of the putter head 16 .
- the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of the putter head 16 twisting on impact.
- the specific gravity of the material that forms the sole insert 54 is less than approximately 90%, 75%, 50%, 40%, 30%, 25%, 20%, 15% or 10% of the specific gravity of the putter body 20 .
- the specific gravity of a stainless steel putter body 20 can be approximately 7,500-8,000 kg/m 3
- the specific gravity of the sole insert 54 can be approximately 1,200-1,500 kg/m 3 (approximately 15-20% of the specific gravity of the putter body 20 ) depending upon the precise materials used to form the polyurethane sole insert 54 . It is recognized that the foregoing example is provided for representative purposes only, and is not intended to limit the types of materials that can be used with the present invention.
- the sole insert 54 can be formed from a relatively heavy material, such as various metal alloys, ceramics, or other suitable materials.
- the sole insert 54 can have a specific gravity that is greater than the specific gravity of the putter body 20 .
- the sole insert 54 can be adhered to the putter body 20 using any one of a variety of methods.
- the sole insert 54 can be adhesively secured to the sole cavity 50 of the putter body 20 .
- the sole insert 54 can be welded, or can include a top coat (not shown) of plastic or other material that secures the sole insert 54 within the sole cavity 50 .
- the sole insert 54 can be removably snapped or otherwise held into place within the sole cavity 50 . It is recognized that any suitable method can be used to secure the sole insert 54 to the putter body 20 , and that the foregoing examples are merely provided as non-exclusive, representative methods.
- FIG. 2D is a bottom perspective view of the putter head 16 illustrated in FIG. 2A .
- the heel weights 44 H, toe weights 44 T, and intermediate face insert 441 are each positioned to be substantially flush with the face surface 36 of the face region 22 .
- the heel weights 44 H, toe weights 44 T, and intermediate face insert 441 can be positioned to be recessed somewhat from the face surface 36 of the face region 22 .
- the heel weights 44 H and/or the toe weights 44 T can be positioned in other locations.
- the heel weights 44 H and the toe weights 44 T can extend in different directions away from the putter body 20 , as explained in greater detail below.
- the sole insert 54 is positioned to be substantially flush with the sole surface 56 of the sole region 28 .
- the sole insert 54 can be positioned to be recessed somewhat from the sole surface 56 of the sole region 28 .
- FIG. 2E is a cross-sectional view of the putter head 16 taken on line 2 E- 2 E of FIG. 2A .
- the partition wall 29 of the partition member 25 is positioned substantially directly below and in alignment with the alignment guide 40 .
- the partition insert 27 is illustrated substantially perpendicular to the partition wall 29 .
- the partition wall 29 can be offset from the alignment guide 40 .
- the putter head 16 can include a plurality of partition walls 29 .
- the two or more of the partition walls 29 can be substantially parallel to each other, and/or substantially parallel with the alignment guide 40 .
- FIG. 3A is a top perspective view of another embodiment of a putter head 316 having features of the present invention, including a putter body 320 .
- similarly termed structural components can be similar or identical to those previously described, unless otherwise specified.
- the putter head 316 includes a shaft cavity 300 instead of a hosel 18 (illustrated in FIG. 2A ).
- the shaft (illustrated in FIG. 1 ) can be inserted into the shaft cavity 300 during construction of the putter 10 .
- the putter head 316 can include a hosel 18 .
- the putter head 316 includes a heel region 330 and a toe region 332 separated or delineated by a centrally positioned transition plane 334 (shown as a dashed plane). Stated another way, the transition plane 334 theoretically divides or demarcates the putter head 316 into the heel region 330 and the toe region 332 .
- the putter head 316 includes a face region 322 , a back edge 324 , an upper region 326 and a sole region 328 .
- the face region 322 includes a generally planar face surface 336 (illustrated in FIG. 3D ) for striking a golf ball (not shown).
- the back edge 324 is rounded. In alternative embodiments, the back edge 324 can be V-shaped, or can be substantially linear.
- the upper region 326 is on an opposing side of the sole region 328 , but is not spaced apart from the sole region 328 .
- the sole region 328 and the upper region 326 are formed as a unitary structure such that there is no gap between the sole region 328 and the upper region 326 .
- the upper region 326 and the sole region 328 jointly extend between the face region 322 and the back edge 324 .
- the upper region 326 and the sole region 328 can jointly have a substantially uniform thickness, or can have a thickness that varies, as illustrated in the embodiment in FIG. 3A .
- the upper region 326 can also include one or more upper region inserts 338 that are similar in size, shape and composition to the upper region insert 38 (illustrated in FIG. 2A ) previously described.
- the upper region insert 338 can include an alignment guide 340 that assists the golfer in aligning a putt and/or increases the likelihood of a truer putting stroke.
- the putter body 320 includes a V-shaped alignment channel 360 .
- the alignment channel 360 illustrated in FIG. 3A is substantially perpendicular to the orientation of the alignment guide 340 .
- the alignment channel 360 and the alignment guide 340 substantially form a “T” shape.
- the golfer can more easily align the putter 10 with the ball before and during a putting stroke in order to obtain more accuracy during a putt.
- the alignment channel can have a different configuration, such as a U-shape, a W-shape, or another suitable configuration.
- FIG. 3B is an exploded top view of an embodiment of the putter head 316 .
- the putter head 316 includes one or more heel weights 344 H, one or more toe weights 344 T and an intermediate face insert 344 I that can form a portion of the face surface 336 (illustrated in FIG. 3D ).
- the putter head 316 includes three different size and/or weight heel weights 344 H and three different size and/or weight toe weights 344 T.
- the overall weighting of the putter head 316 can be influenced to provide a lower or higher center of gravity as desired, and/or to provide increased weighting toward the heel 316 H and/or the toe 316 T, or toward the transition plane 334 (illustrated in FIG. 3A ), as desired. It is recognized, however, that greater or fewer than three heel weights 344 H and/or toe weights 344 T can be used in the putter head 316 provided herein.
- the material used to form the heel and toe weights 344 H, 344 T can affect the balance, center of gravity, and/or moment of inertia of the putter head 316 .
- the heel weights 344 H and/or toe weights 344 T can be formed substantially from materials having a greater specific gravity than a specific gravity of the material used to substantially form at least a portion of the putter body 320 .
- the specific gravity of the heel weights 344 H and/or toe weights 344 T can be at least approximately 50 percent greater than the specific gravity of the putter body 320 .
- the specific gravity of the heel weights 344 H and/or toe weights 344 T can be at least approximately 100 percent, 150 percent, 200 percent, 250 percent, 300 percent, 350 percent or 400 percent greater than the specific gravity of the putter body 320 , as non-exclusive examples. In yet another alternative embodiment, the specific gravity of the heel weights 344 H and/or toe weights 344 T can be greater or less than the stated percentages relative to the specific gravity of the putter body 320 .
- the heel weights 344 H and/or toe weights 344 T can be formed substantially from tungsten, lead, copper or other suitable materials, as non-exclusive examples.
- the disparity in specific gravity between the material used to substantially form heel weights 344 H and/or toe weights 344 T on the one hand, and the material used to substantially form the putter body 320 on the other hand, in conjunction with the size and/or positioning of the heel weights 344 H and the toe weights 344 T, can provide increased stability of the putter head 316 during putting to inhibit a twisting moment which can result in an errant putt.
- the shape, size and positioning of the heel weights 344 H and the toe weights 344 T in conjunction with other components of the putter head 316 can also affect the balance, center of gravity, and/or moment of inertia of the putter head 316 , each of which can provide a truer roll and topspin of the golf ball, as explained in greater detail below.
- FIG. 3B also illustrates that the upper region 326 also defines an upper region cavity 348 that receives the upper region insert 338 .
- the upper region cavity 348 is sized and shaped to accommodate the upper region insert 338 .
- FIG. 3C is a bottom exploded view of the putter head 316 illustrated in FIG. 3A .
- the putter body 320 includes one or more heel cavities 358 H that each receives one of the heel weights 344 H. Additionally, the putter body 320 includes one or more toe cavities 358 T that each receives one of the toe weights 344 T. Further, the putter body 320 includes an intermediate face cavity 358 I that receives the intermediate face insert 344 I.
- the putter head 316 can include one or more sole cavities positioned within the sole region 328 , including a first sole cavity 350 F and a second sole cavity 350 S. It is recognized that the positioning and dimensions of the sole cavities 350 F, 350 S can vary from the embodiments illustrated herein depending upon the design requirements of the golf putter 10 and the putter head 316 .
- the first sole cavity 350 F can have a first sole cavity perimeter 352 F that is defined entirely within the sole region 328 . In other words, in this embodiment, the first sole cavity perimeter 352 F of the first sole cavity 350 does not extend to the face region 322 or the back edge 324 of the putter head 316 .
- the second sole cavity 350 S can have a second sole cavity perimeter 352 S that is defined entirely within the sole region 328 .
- the second sole cavity perimeter 352 S of the second sole cavity 350 S does not extend to the face region 322 or the back edge 324 of the putter head 316 .
- one or more of the sole cavity perimeters 352 F, 352 S of the sole cavity 350 can extend to the face region 322 and/or the back edge 324 of the putter head 316 .
- the first sole cavity 350 F has a generally rectangular footprint.
- the footprint of the first sole cavity 350 can be oval, circular, triangular, or any other suitable polygonal shape.
- the depth of the first sole cavity 350 F illustrated in FIG. 3C is substantially uniform.
- the depth of the first sole cavity 350 F can vary.
- the first sole cavity 350 F can be substantially wedge-shaped, concave, convex, U-shaped, V-shaped, or can have another suitable configuration.
- the second sole cavity 350 S in the embodiment illustrated in FIG. 3C has a somewhat rectangular footprint, although one of the sides of the second sole cavity 350 S approximately follows the contour of the back edge 324 of the putter body 320 . It is recognized that any suitable geometry can be used for the second sole cavity 350 S. Additionally, in this embodiment, the depth of the second sole cavity 350 S is not uniform, but is somewhat wedge-shaped. Alternatively, the depth of the second sole cavity 350 S can be substantially uniform, concave, convex, U-shaped, V-shaped, or can have another suitable configuration.
- the putter head 316 includes a first sole insert 354 F that is inserted into the first sole cavity 350 F. Somewhat similarly to the first sole cavity 350 F, the positioning and dimensions of the first sole insert 354 F can vary. In this embodiment, an exposed surface of the first sole insert 354 F is substantially flush with a sole surface 356 of the sole region 328 . Stated another way, regardless of the shape of the sole surface 356 , the first sole insert 354 F can follow the contour of the sole surface 356 to provide a smooth sole region 328 that moves along a putting surface during putting. In an alternative embodiment, the first sole insert 354 F can be recessed from the sole surface 356 or can extend away from the sole surface 356 .
- the materials used to form the first sole insert 354 F can vary.
- the first sole insert 354 F can be formed from a relatively lightweight material such as polyurethane, other plastic materials, ceramic, wood or epoxy compounds.
- the first sole insert 354 F can be formed substantially from a material having a specific gravity that is lower than a specific gravity of the material used to substantially form the putter body 320 .
- the weighting of the putter head 316 is distributed more toward the heel region 330 , the toe region 332 and the back edge 324 (e.g., the perimeter) of the putter head 316 , and less in the interior of the putter head 316 .
- the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of the putter head 316 twisting on impact.
- the specific gravity of the material that forms the first sole insert 354 F is less than approximately 90%, 75%, 50%, 40%, 30%, 25%, 20%, 15% or 10% of the specific gravity of the putter body 320 .
- the specific gravity of a stainless steel putter body 320 can be approximately 7,500-8,000 kg/m 3
- the specific gravity of a polyurethane material used to substantially form the first sole insert 354 F can be approximately 1,200-1,500 kg/m 3 (approximately 15-20% of the specific gravity of the putter body 20 ) depending upon the precise materials used to form the polyurethane first sole insert 354 F. It is recognized that the foregoing example is provided for representative purposes only, and is not intended to limit the types of materials that can be used with the present invention.
- the first sole insert 354 F can be formed from a relatively heavy material, such as various metal alloys, ceramics, or other suitable materials.
- the material used to substantially form the first sole insert 354 F can have a specific gravity that is greater than the specific gravity of the material used to substantially form the putter body 320 .
- the first sole insert 354 F can be positioned so that at least a portion of the first sole insert 354 F is within the heel region 330 , and at least a portion is within the toe region 332 . In another embodiment, the first sole insert 354 F is positioned substantially symmetrically relative to the transition plane 334 .
- the first sole insert 354 F can be adhered to the putter body 320 using any one of a variety of methods.
- the first sole insert 354 F can be adhesively secured to the first sole cavity 350 F of the putter body 320 .
- the first sole insert 354 F can be welded, or can include a top coat (not shown) of plastic or other material that secures the first sole insert 354 F within the first sole cavity 350 F.
- the first sole insert 354 F can be removably snapped or otherwise held into place within the first sole cavity 350 F. It is recognized that any suitable method can be used to secure the first sole insert 354 F to the putter body 320 , and that the foregoing examples are merely provided as non-exclusive, representative methods.
- the putter head 316 includes a second sole insert 354 S that is inserted into the second sole cavity 350 S.
- first sole insert 354 F and the second sole insert 354 S can be interchangeable so that either sole insert 354 F, 354 S can be the first sole insert 354 F or the second sole insert 354 S.
- the positioning and dimensions of the second sole insert 354 S can vary.
- an exposed surface of the second sole insert 354 S is substantially flush with a sole surface 356 of the sole region 328 .
- the second sole insert 354 S can follow the contour of the sole surface 356 to provide a smooth sole region 328 that moves along a putting surface during putting.
- the second sole insert 354 S can be recessed from the sole surface 356 or can extend away from the sole surface 356 .
- the materials used to form the second sole insert 354 S can vary.
- the second sole insert 354 S can be formed from a relatively heavy material such as a metal alloy.
- the second sole insert 354 S is formed at least partially from tungsten, copper, lead, or other metals having a relatively high specific gravity.
- the second sole insert 354 S can have a specific gravity that is higher than a specific gravity of the first sole insert 354 F and the putter body 320 .
- the weighting of the putter head 316 is altered so that more of the weight of the putter head is distributed toward the heel region 330 , the toe region 332 and near the back edge 324 and sole region 328 of the putter head 316 .
- the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of the putter head 316 twisting on impact.
- the specific gravity of the material that substantially forms the second sole insert 354 S is at least approximately 25%, 50%, 75%, 100%, 150%, 200%, 250% or 300% greater than the specific gravity of the material used to substantially form the putter body 320 .
- the specific gravity of the material that forms the second sole insert 354 S is at least approximately 100%, 200%, 300%, 400%, 500%, 600%, 700%, 800%, 900%, 1,000%, 1,200%, 1,400%, 1,500% greater than the specific gravity of the first sole insert 354 F.
- the specific gravity of a stainless steel putter body 320 can be approximately 7,500-8,000 kg/m 3
- the specific gravity of the second sole insert 354 S can be approximately 19,200 kg/m 3 (approximately 250% of the specific gravity of the putter body 20 ) depending upon the precise materials used to form the second sole insert 354 S.
- the specific gravity of the first sole insert 354 F formed from a polyurethane material can be approximately 1,200 to 1,500 kg/m 3
- the specific gravity of the second sole insert 354 S can be approximately 19,200 kg/m 3 (approximately 1,600% of the specific gravity of the first sole insert 354 F), depending upon the precise materials used to form the first sole insert 354 F and the second sole insert 354 S.
- more of the weight is distributed toward the perimeter of the putter head 316 , which provides an increased moment of inertia for better control of the putter head 316 on impact with the golf ball. It is recognized that the foregoing examples are provided for representative purposes only, and are not intended to limit the types of materials that can be used with the present invention.
- the second sole insert 354 S can be formed from a relatively lightweight material, such as various plastics, epoxies, wood or other suitable materials.
- the material used to substantially form the second sole insert 354 S can have a specific gravity that is lower than the specific gravity of the material used to substantially form the putter body 320 .
- the second sole insert 354 S can be adhered to the putter body 320 in a somewhat similar manner as the first sole insert 354 F.
- the second sole insert 354 S can have a different geometry, volume, weight, density and/or dimensions from the first sole insert 354 F depending upon the design requirements of the putter 10 and/or the putter head 316 .
- the second sole insert 354 S can have a volume that is less than approximately 90%, 80%, 75%, 60%, 50%, 40%, 30%, 25% or 10% of the volume of the first sole insert 354 F.
- the weight of the second sole insert 354 S can be at least approximately 50%, 100%, 150%, 200%, 300%, 400%, 500%, 750%, 1,000% greater than a weight of the first sole insert 354 F. In another embodiment, however, the second sole insert 354 S can have a weight that is lower than the weight of the first sole insert 354 F.
- the second sole insert 354 S can be positioned so that at least a portion of the second sole insert 354 S is within the heel region 330 , and at least a portion is within the toe region 332 .
- the second sole insert 354 S is positioned substantially symmetrically relative to the transition plane 334 , as illustrated in FIGS. 3A and 3D , for example.
- FIG. 3D is a bottom perspective view of the putter head 316 illustrated in FIG. 3A .
- the heel weights 344 H, toe weights 344 T, and intermediate face insert 344 I are each positioned to be substantially flush with the face surface 336 of the face region 322 .
- the heel weights 344 H, toe weights 344 T, and intermediate face insert 344 I can be positioned to be recessed somewhat from the face surface 336 of the face region 322 , or can be positioned on or near other locations of the putter body 320 .
- the one or more heel weights 344 H and the one or more toe weights 344 T each has a center of gravity.
- each of the sole inserts 354 F, 354 S has a center of gravity.
- the center of gravity 361 H of the one or more heel weights 344 H, the center of gravity 361 T of the one or more toe weights 344 T and the center of gravity 361 I of one of the sole inserts 354 F, 354 S form the vertices of a triangle 362 (shown as a dashed line) wherein two of the sides of the triangle 362 have a substantially similar length.
- the triangle 362 has sides 362 A, 362 B, 362 C.
- side 362 A and side 362 B are substantially similar in length.
- the sides 362 A, 362 B are identical in length.
- the sides 362 A-C are interchangeable. That is, any of the sides can be side 362 A, 362 B or 362 C.
- the three centers of gravity that form the triangle 362 can be formed by (i) a single center of gravity of one of the heel weights 344 H, (ii) a single center of gravity of one of the toe weights 344 T, and (iii) one of the sole inserts 354 F, 354 S.
- FIG. 3E is a side view of the putter head 316 illustrated in FIG. 3A .
- FIG. 3E illustrates that the triangle 362 (shown as a line) formed by the center of gravity 361 H of the heel weights 344 H, the center of gravity 361 T of the toe weights 344 T (not shown in FIG. 3E for clarity), and the center of gravity 361 I of the second sole insert 354 S defines a plane 364 (shown as a line) that forms an angle 366 with a sole contact surface 368 that is greater than zero degrees.
- the centers of gravity 361 H, 361 T, 361 I can define a plane 364 that slopes downwardly moving in a direction from the face region 322 toward the back edge 324 .
- the sole contact surface 368 is defined as a portion of the sole surface 356 that is substantially parallel to a ground surface 370 (such as a putting green) during putting.
- the angle 366 can be varied depending upon the design requirements of the putter 10 and the putter head 316 .
- the angle 366 is at least approximately as great as an angle formed between the face surface 336 of the face region 322 relative to vertical.
- the angle 366 can be within the range of between greater than approximately five degrees and less than approximately 45 degrees.
- the angle 366 can be greater than approximately eight degrees and less than approximately 30 degrees.
- the angle 366 can be greater than approximately ten degrees and less than approximately 20 degrees.
- the angle 366 can be approximately 15 degrees.
- any suitable angle 366 can be used. With these designs, the putter head 316 can generate increased overspin and improved loft of the ball on impact, thereby decreasing the likelihood of skipping or skidding across the ground surface 370 .
- FIG. 4A illustrates another embodiment of a putter head 416 having features of the present invention.
- the putter head 416 includes a heel region 430 and a toe region 432 separated by a centrally positioned transition plane 434 (shown as a dashed plane).
- the transition plane 434 theoretically divides or demarcates the putter head 416 into the heel region 430 and the toe region 432 .
- the putter head 416 includes a face region 422 , a back edge 424 , an upper region 426 and a sole region 428 .
- the face region 422 includes a generally planar face surface 436 (illustrated in FIG. 4C ) for striking a golf ball (not shown).
- the back edge 424 is somewhat V-shaped. In alternative embodiments, the back edge 424 can be rounded, or can be substantially linear.
- the upper region 426 can also include one or more upper region inserts 438 that are similar in size, shape and composition to the upper region insert 38 (illustrated in FIG. 2A ) previously described.
- the upper region insert 438 can include an alignment guide 440 that assists the golfer in aligning a putt and/or increases the likelihood of a truer putting stroke.
- the putter body 420 includes a V-shaped (or other suitably shaped) alignment channel 460 .
- the alignment channel 460 illustrated in FIG. 4A is substantially perpendicular to the orientation of the alignment guide 440 .
- FIG. 4B is an exploded top view of the putter head 416 illustrated in FIG. 4A .
- the putter head 416 includes one or more heel weights 444 H, one or more toe weights 444 T and an intermediate face insert 444 I that can form a portion of the face surface 436 (illustrated in FIG. 4C ).
- the heel weights 444 H, the toe weights 444 T and the intermediate face insert 444 I illustrated in FIG. 4B can be formed, sized, shaped and positioned somewhat similarly to those described in previous embodiments.
- FIG. 4B also illustrates that the upper region 426 also defines an upper region cavity 448 that receives the upper region insert 438 .
- the upper region cavity 448 is sized and shaped to accommodate the upper region insert 438 .
- the putter head 416 includes a first sole insert 454 F and a second sole insert 454 S.
- the positioning and dimensions of the sole inserts 454 F, 454 S can vary.
- the materials used to form the sole inserts 454 F, 454 S can vary.
- the first sole insert 454 F can be formed from a relatively lightweight material such as polyurethane, other plastic materials, ceramic, wood or epoxy compounds.
- the specific gravity of the material that forms the first sole insert 454 F is less than approximately 90%, 75%, 50%, 40%, 30%, 25%, 20%, 15% or 10% of the specific gravity of the putter body 420 .
- the second sole insert 454 S can be formed from a different material from the first sole insert 454 F.
- the second sole insert 454 S is formed from a material having a greater specific gravity than the first sole insert 454 F.
- the second sole insert 454 S can be formed from a relatively heavy material such as a metal alloy.
- the second sole insert 454 S is formed at least partially from tungsten, copper, lead, or other metals having a relatively high specific gravity.
- the second sole insert 454 S can have a specific gravity that is higher than a specific gravity of the first sole insert 454 F and the putter body 420 .
- the weighting of the putter head 416 is altered so that more of the weight of the putter head is distributed toward the heel region 430 (illustrated in FIG. 4A ), the toe region 432 (illustrated in FIG. 4A ) and near the back edge 424 and sole region 428 of the putter head 416 .
- the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of the putter head 416 twisting on impact.
- the shape of the second sole insert 454 S can be varied. In one embodiment, the second sole insert 454 S can be somewhat wedge shaped. Further, the second sole insert 454 S can have a substantially pentagonal footprint, as illustrated in FIG. 4B . However, it is recognized that the shape and size of the second sole insert 454 S can be any suitable configuration provided that the weighting of the putter head 416 is consistent with the intent set forth herein.
- the specific gravity of the material that substantially forms the second sole insert 454 S is at least approximately 25%, 50%, 75%, 100%, 150%, 200%, 250% or 300% greater than the specific gravity of the material used to substantially form the putter body 420 .
- the specific gravity of the material that forms the second sole insert 454 S is at least approximately 100%, 200%, 300%, 400%, 500%, 600%, 700%, 800%, 900%, 1,000%, 1,200%, 1,400%, 1,500% greater than the specific gravity of the first sole insert 454 F.
- FIG. 4C is a bottom perspective view of the putter head 416 illustrated in FIG. 4A .
- the one or more heel weights 444 H and the one or more toe weights 444 T each has a center of gravity.
- each of the sole inserts 454 F, 454 S has a center of gravity.
- the center of gravity 461 H of the one or more heel weights 444 H, the center of gravity 461 T of the one or more toe weights 444 T and the center of gravity 461 I of one of the sole inserts 454 F, 454 S form the vertices of a triangle 462 (shown as a dashed line) wherein two of the sides of the triangle 462 have a substantially similar length.
- the triangle 462 has sides 462 A, 462 B, 462 C.
- side 462 A and side 462 B are substantially similar in length.
- the sides 462 A, 462 B are identical in length.
- the three centers of gravity 461 H, 461 T, 461 I that form the triangle 462 can be formed by (i) a single center of gravity of one of the heel weights 444 H, (ii) a single center of gravity of one of the toe weights 444 T, and (iii) one of the sole inserts 454 F, 454 S.
- the centers of gravity 461 H, 461 T, 461 I can define a plane (not shown) that slopes downwardly moving in a direction from the face region 422 toward the back edge 424 .
- the putter head 416 can generate increased topspin and improved loft of the ball on impact.
- FIG. 5A illustrates another embodiment of a putter head 516 having features of the present invention, including a putter body 520 .
- the putter head 516 includes a face region 522 , a back edge 524 , an upper region 526 and a sole region 528 .
- the back edge 524 is somewhat rounded. In alternative embodiments, the back edge 524 can have another suitable shape.
- the putter head 516 includes a heel region 530 and a toe region 532 separated by a centrally positioned transition plane 534 (shown as a dashed plane). Stated another way, the transition plane 534 theoretically divides or demarcates the putter head 516 into the heel region 530 and the toe region 532 . In this embodiment, the putter head 516 also includes a heel weight 544 H and a toe weight 544 T that are secured to the putter body 520 .
- the heel weight 544 H and the toe weight 544 T can form a portion of the face surface 536 (illustrated in FIG. 5C ) and/or the back edge 524 .
- the heel weight 544 H can include the heel 516 H
- the toe weight 544 T can include the toe 516 T.
- the material(s) used to form the heel and toe weight 544 H, 544 T can affect the balance, center of gravity, and/or moment of inertia of the putter head 516 .
- the heel weight 544 H and/or toe weight 544 T can be formed substantially from materials having a greater specific gravity than a specific gravity of the material used to substantially form at least a portion of the putter body 520 .
- the specific gravity of the heel weight 544 H and/or toe weight 544 T can be at least approximately 50 percent greater than the specific gravity of the putter body 520 .
- the specific gravity of the heel weight 544 H and/or toe weight 544 T can be at least approximately 100 percent, 150 percent, 200 percent, 250 percent, 300 percent, 350 percent or 400 percent greater than the specific gravity of the putter body 520 , as non-exclusive examples. In yet another alternative embodiment, the specific gravity of the heel weight 544 H and/or toe weight 544 T can be greater or less than the stated percentages relative to the specific gravity of the putter body 520 .
- the heel weight 544 H and/or toe weight 544 T can be formed substantially from tungsten, lead, copper or other suitable materials, as non-exclusive examples.
- the disparity in specific gravity between the material used to substantially form heel weight 544 H and/or toe weight 544 T on the one hand, and the material used to substantially form the putter body 520 on the other hand, in conjunction with the size and/or positioning of the heel weight 544 H and the toe weight 544 T, can provide increased stability of the putter head 516 during putting to inhibit a twisting moment which can result in an errant putt.
- the shape, size and positioning of the heel weight 544 H and the toe weight 544 T in conjunction with other components of the putter head 516 can also affect the balance, center of gravity, and/or moment of inertia of the putter head 516 , each of which can provide a truer roll and topspin of the golf ball.
- FIG. 5B is an exploded top view of the putter head 516 illustrated in FIG. 5A .
- the heel weight 544 H and the toe weight 544 T can be secured to the putter body 520 by various means.
- the heel weight 544 H can be secured to the putter body 520 using one or more pins 572 that extend into the heel weight 544 H and/or the putter body 520 .
- the heel weight 544 H can be welded, adhesively applied or secured to the putter body 520 by other suitable methods.
- the toe weight 544 T can likewise be secured to the putter body 520 .
- the putter head 516 includes a first sole insert 554 F and a second sole insert 554 S.
- the positioning and dimensions of the sole inserts 554 F, 554 S can vary.
- the materials used to form the sole inserts 554 F, 554 S can vary.
- the first sole insert 554 F can be formed from a relatively lightweight material such as polyurethane, other plastic materials, ceramic, wood or epoxy compounds.
- the specific gravity of the material that forms the first sole insert 554 F is less than approximately 90%, 75%, 50%, 40%, 30%, 25%, 20%, 15% or 10% of the specific gravity of the putter body 520 .
- the second sole insert 554 S can be formed from a different material from the first sole insert 554 F.
- the second sole insert 554 S is formed from a material having a greater specific gravity than the first sole insert 554 F.
- the second sole insert 554 S can be formed from a relatively heavy material such as a metal alloy.
- the second sole insert 554 S is formed at least partially from tungsten, copper, lead, or other metals having a relatively high specific gravity.
- the second sole insert 554 S can be formed from a material having a specific gravity that is higher than a specific gravity of the material used to form the first sole insert 554 F and/or the putter body 520 .
- the weighting of the putter head 516 is altered so that more of the weight of the putter head 516 is distributed toward the heel region 530 (illustrated in FIG. 5A ), the toe region 532 (illustrated in FIG. 5A ) and near the back edge 524 and sole region 528 of the putter head 516 .
- the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of the putter head 516 twisting on impact.
- the specific gravity of the material that substantially forms the second sole insert 554 S is at least approximately 25%, 50%, 75%, 100%, 150%, 200%, 250% or 300% greater than the specific gravity of the material used to substantially form the putter body 520 .
- the specific gravity of the material that forms the second sole insert 554 S is at least approximately 100%, 200%, 300%, 400%, 500%, 600%, 700%, 800%, 900%, 1,000%, 1,200%, 1,400%, 1,500% greater than the specific gravity of the material that forms the first sole insert 554 F.
- FIG. 5C is a bottom perspective view of the putter head 516 illustrated in FIG. 5A .
- the heel weight 544 H and the toe weight 544 T each has a center of gravity.
- each of the sole inserts 554 F, 554 S has a center of gravity.
- the center of gravity 561 H of the heel weight 544 H, the center of gravity 561 T of the toe weight 544 T and the center of gravity 561 I of one of the second sole insert 554 S form the vertices of a triangle 562 (shown as a dashed line) wherein two of the sides of the triangle 562 have a substantially similar length.
- the triangle 562 has sides 562 A, 562 B, 562 C.
- side 562 A and side 562 B are substantially similar in length.
- the sides 562 A, 562 B are identical in length.
- the three centers of gravity 561 H, 561 T, 561 I that form the triangle 562 can be formed by (i) a single center of gravity of the heel weight 544 H, (ii) a single center of gravity of the toe weight 544 T, and (iii) the second sole insert 554 S.
- the centers of gravity 561 H, 561 T, 561 I can define a plane (not shown) that slopes downwardly moving in a direction from the face region 522 toward the back edge 524 .
- the putter head 516 can generate increased topspin and improved loft of the ball on impact, with decreased incidence of skidding or skipping across the ground surface.
Abstract
A golf putter (10) includes a putter head (316) having a putter body (320), a heel weight (344H), a toe weight (344T) and a first sole insert (354F). The putter body (320) includes a heel region (330) and a toe region (332), and is formed from a material having a first specific gravity. The heel weight (344H), the toe weight (344T) and the first sole insert (354F) are each formed from materials having specific gravities that are greater than the first specific gravity. In one embodiment, the putter head (316) also includes a second sole insert (354S). The sole inserts (354F, 354S) are positioned partly in the heel region (330) and partly in the toe region (332) of the putter body (320). In another embodiment, the first sole insert (354F) has a first specific gravity, and the second sole insert (354S) has a second specific gravity that is greater than the first specific gravity.
Description
- The present invention pertains to golf putters, and more specifically, to putter heads for golf putters.
- The most commonly used club in a typical golf bag is the putter. Approximately one-third to one half of a golfer's strokes on the golf course are taken using a putter. The design of golf putters varies widely. Putter heads can be manufactured having different weighting characteristics, sizes, shapes and colors. Putter heads have progressed from a simple blade-shaped design to more sophisticated designs such as mallet-type putter heads which can include particular weight distributions to improve performance.
- It is well known that weight distribution in a putter head can affect the moment of inertia of the putter head. As used herein, the moment of inertia is defined as the tendency of the putter head to rotate about its center of gravity when impacting a golf ball at locations spaced from the center of gravity. If the putter head is more resistant to twisting upon an off-center impact with the ball, there is a higher likelihood that the ball will move toward the intended target. Thus, a higher moment of inertia translates into greater forgiveness for off-center ball-striking, e.g. increased directional control of the ball. Further, decreasing the tendency of the putter head to twist on impact causes a more direct transfer of energy between the movement of the putter head and movement of the ball, resulting in better distance control while putting. In addition, the weight distribution of a putter head can impact the spin of the ball following contact with the face of the putter. Generally, a putter head that provides the ball with a certain amount of topspin while reducing the likelihood of sidespin or skidding along the surface of the green is desired.
- Traditionally, putter heads have been formed entirely of metal, such as stainless steel or other alloys. Current putter heads can include face inserts formed from materials that are different than the remainder of the putter head. However, achieving the precise weight and balance, along with a high moment of inertia to provide a more optimal loft and a truer roll of the ball following impact has historically been difficult, if not elusive.
- Accordingly, the need exists to provide a putter head having improved weighting and balance characteristics for a more consistent putting stroke and improved loft and roll of the ball after impact. A further need exists to provide a putter head having a high moment of inertia for to maintain a truer roll and decreased twisting of the putter head upon impact with the ball. Another need exists to provide a putter that is easy to use and cost-efficient to manufacture.
- A golf putter in accordance with the present invention includes a putter body, a heel weight, a toe weight and a first sole insert. The putter body has a centrally positioned transition plane that demarcates or divides the putter body into a heel region and a toe region. The putter body includes a sole region that defines a first sole cavity. In one embodiment, the putter body is formed substantially from a material having a first specific gravity. The heel weight is secured to the heel region, and is formed substantially from a material having a second specific gravity that is greater than the first specific gravity. The toe weight is secured to the toe region, and is formed substantially from a material having a third specific gravity that is greater than the first specific gravity. The first sole insert is inserted into the first sole cavity, and is formed substantially from a material having a fourth specific gravity that is greater than the first specific gravity.
- In another embodiment, the golf putter includes a putter body, a first sole insert and a second sole insert. The putter body includes a sole region that defines a first sole cavity and a second sole cavity, with each sole cavity being positioned partly in the heel region and partly in the toe region of the putter body. The first sole insert is inserted into the first sole cavity, and the second sole insert is inserted into the second sole cavity.
- In yet another embodiment, the golf putter includes a putter body, a first sole insert and a second sole insert. In this embodiment, the first sole insert has a first specific gravity, and the second sole insert has a second specific gravity that is greater than the first specific gravity.
- The present invention also includes a method for manufacturing a putter head of a golf putter.
- The novel features of this invention, as well as the invention itself, both as to its structure and its operation, will be best understood from the accompanying drawings, taken in conjunction with the accompanying description, in which similar reference characters refer to similar parts, and in which:
-
FIG. 1 is a perspective view of a golf putter having features of the present invention; -
FIG. 2A is a perspective view of a first embodiment of a putter head having features of the present invention; -
FIG. 2B is an exploded top view of the putter head illustrated inFIG. 2A ; -
FIG. 2C is an exploded bottom view of the putter head illustrated inFIG. 2A ; -
FIG. 2D is a bottom perspective view of the putter head illustrated inFIG. 2A ; -
FIG. 2E is a cross-sectional view of a portion of the putter head taken online 2E-2E inFIG. 2A ; -
FIG. 3A is a perspective view of a second embodiment of a putter head having features of the present invention; -
FIG. 3B is an exploded top view of the putter head illustrated inFIG. 3A ; -
FIG. 3C is an exploded bottom view of the putter head illustrated inFIG. 3A ; -
FIG. 3D is a bottom perspective view of the putter head illustrated inFIG. 3A ; -
FIG. 3E is a side view of the putter head illustrated inFIG. 3A ; -
FIG. 4A is a perspective view of a third embodiment of a putter head having features of the present invention; -
FIG. 4B is an exploded view of the putter head illustrated inFIG. 4A ; -
FIG. 4C is a bottom perspective view of the golf putter head illustrated inFIG. 4A ; -
FIG. 5A is a perspective view of a fourth embodiment of a golf putter head having features of the present invention; -
FIG. 5B is an exploded view of the golf putter head illustrated inFIG. 5A ; and -
FIG. 5C is a bottom perspective view of the golf putter head illustrated inFIG. 5A . -
FIG. 1 is a perspective view of an embodiment of agolf putter 10 having features of the present invention, including agrip 12, ashaft 14 and aputter head 16 that can include an attachedhosel 18. Thegrip 12 is positioned on theshaft 14. Thegrip 12 can be formed from rubber, leather, plastic or other suitable materials that provide a user with asufficient grip 12 on thegolf putter 10. - In the embodiment illustrated in
FIG. 1 , theshaft 14 is secured to thehosel 18 of theputter head 16. In one or more alternative embodiments, theputter head 16 does not include ahosel 18, and theshaft 14 can be directly or indirectly secured to theputter head 16 by other suitable means. Theputter head 16 includes aheel 16H and atoe 16T. -
FIG. 2A is a perspective view of a first embodiment of theputter head 16. The design of theputter head 16 can be varied to suit the design requirements of theputter 10. In this embodiment, theputter head 16 generally includes thehosel 18, aputter body 20 and a plurality of inserts. As used herein, theputter body 20 is defined as a generally unitary structure that forms a portion of theputter head 16, and which receives one or more of the inserts, as described in greater detail below. Moreover, theputter body 20 defines one or more cavities (not shown inFIG. 2A ) that each receives one insert. The cavities are also described in greater detail below. - More specifically, the
putter head 16 includes aface region 22, aback region 24, anupper region 26 and asole region 28. Theface region 22 is spaced apart from theback region 24. In the embodiment illustrated inFIG. 2A , theupper region 26 is spaced apart from thesole region 28. In an alternative embodiment, thesole region 28 and theupper region 26 are formed as a unitary structure such that there is no gap between thesole region 28 and theupper region 26. Stated another way, theupper region 26 can be one side of a portion of theputter body 20, while thesole region 28 can be another side of the portion of theputter body 20, which generally faces in a direction opposite that of theupper region 26. - Further, the
putter head 16 can also be divided into aheel region 30 that includes theheel 16H, and atoe region 32 that includes thetoe 16T. Basically, theheel region 30 is defined as at least a portion of theputter head 16 that is more proximal to the feet of one using theputter 10 during a typical putting stroke, while thetoe region 32 Is defined as at least a portion of theputter head 16 that is more distal to the feet of one using theputter 10 during a typical putting stroke. - Thus, the
heel region 30 can include a portion of theface region 22, theback region 24, theupper region 26 and thesole region 28. Further, thetoe region 32 can also include a different portion of theface region 22, theback region 24, theupper region 26 and thesole region 28. In this embodiment, a centrally positioned transition plane 34 (shown as a dashed plane) is illustrated inFIG. 2A which approximately demarcates theputter head 16 into theheel region 30 and thetoe region 32. As used herein, thetransition plane 34 is a theoretical plane that forms a boundary between theheel region 30 and thetoe region 32. In other words, thetransition plane 34 is where theheel region 30 and thetoe region 32 meet. - The
putter body 20 can be formed from a variety of materials. For example, theputter body 20 can be formed from metals, metal alloys, plastics, ceramics, composites, wood, or any other suitably strong materials. In one embodiment, theputter body 20 is formed from stainless steel. Theputter body 20 can be cast, milled, molded, carved, ground, sanded or otherwise formed and/or shaped in any other suitable manner known in the art. - The
face region 22 includes a generally planar face surface 36 (illustrated inFIG. 2D ) for striking a golf ball (not shown). Theface surface 36 can be flat or slightly curved, for example. In one embodiment, theface surface 36 can form an angle with theupper region 26 within the range of between approximately 90 and 100 degrees. In another embodiment, theface surface 36 can form an angle with thesole region 28 within the range of between approximately 80 and 90 degrees. More specifically, in one embodiment, theface surface 36 can form an angle within the range of approximately 0 to 10 degrees from vertical. In alternative embodiments, theface surface 36 can be within the range of 2.0 to 8.0 degrees, 3.0 to 7.0 degrees, 4.0 to 6.0 degrees, or approximately 5.0 degrees from vertical. - In the embodiment illustrated in
FIG. 2A , theback region 24 extends substantially vertically between theupper region 26 and thesole region 28 on a backside of theputter head 16. In this embodiment, theback region 24 is substantially arc-shaped, and can have a radius of curvature that is approximately equal to or somewhat larger than that of a standard golf ball. In an alternative embodiment, theback region 24 can be parabolic or can have another configuration. - In the embodiment illustrated in
FIG. 2A , theupper region 26 extends between theface region 22 and theback region 24. In this embodiment, a portion of theupper region 26 can have a somewhat semicircular shape. Further, theupper region 26 can be curved or arc-shaped near theback region 24, and can be relatively linear near theface region 22, as illustrated inFIG. 2A . Theupper region 26 can have a substantially uniform thickness, or can have a thickness that varies. - The
upper region 26 can also include one or more upper region inserts 38. The size and shape of the upper region insert can vary. For example, the upper region insert 38 illustrated inFIG. 2A is substantially circular-shaped or disc-shaped, and can have a diameter that is similar to or somewhat smaller than the diameter of a standard golf ball. In one embodiment, the diameter of the upper region insert 38 is less than 1.60 inches and greater than approximately 1.00 inches. In an alternative embodiment, the diameter of the upper region insert 38 is less than approximately 1.55 inches and greater than approximately 1.25 inches. In yet another alternative embodiment, the diameter of the upper region insert 38 is less than approximately 1.52 inches and greater than approximately 1.40 inches. In still another alternative embodiment, the diameter of the upper region insert 38 is approximately 1.50 inches. In still alternative embodiments, the upper region insert can be another shape, such as oval, triangular, rectangular, hexagonal, octagonal or another suitable geometry. By using a upper region insert 38 that is somewhat smaller than an actual golf ball, it is believed that a more accurate alignment between theputter head 16 and the golf ball can be achieved at impact. - The upper region insert 38 can be formed from materials having a different specific gravity and/or density than the materials that substantially form the
putter body 20. In one embodiment, the upper region insert 38 is formed from materials having a lower specific gravity and/or density than the materials that substantially form the remainder of theputter body 20. For example, the upper region insert 38 can be formed from plastic, aluminum or other alloys, epoxy resin, or other suitable relatively lightweight materials. In these embodiments, the thickness of the upper region insert 38 can vary depending upon the desired weighting, balance, center of gravity and/or moment of inertia of theputter head 16. - Alternatively, the upper region insert 38 can be formed from the same material used to form the
putter body 20, such as stainless steel, for example. Additionally, the upper region insert 38 can be at least partly the color of a standard white or other colored golf ball, or can have another suitable color or appearance. - Further, the upper region insert 38 can include an
alignment guide 40 that assists the golfer in aligning a putt and/or increases the likelihood of a truer putting stroke. Thealignment guide 40 can be an impression or an indentation in atop side 42 of theupper region insert 38. Alternatively, thealignment guide 40 can include a black or other colored marking on thetop side 42 of theupper region insert 38. In one embodiment, thealignment guide 40 is substantially linear, and/or can be substantially rectangular in shape. In an alternative embodiment, thealignment guide 40 can be triangular, arrow-shaped, circular, oval, or can have another suitable geometry that assists the golfer in aligning a putt and/or increasing the likelihood of a truer putting stroke. - In the embodiment illustrated in
FIG. 2A , thesole region 28 extends between theface region 22 and theback region 24. The configuration of thesole region 28 can vary. In one embodiment, the thickness of thesole region 28 can be substantially uniform fromheel 16H to toe 16T. In an alternative embodiment, the thickness of thesole region 28 can vary moving fromheel 16H to toe 16T. Additionally, thesole region 28 can have a thickness that is equal to or greater than a thickness of theupper region 26, which can provide theputter head 16 with an overall lower center of gravity. -
FIG. 2B is an exploded top view of an embodiment of theputter head 16. In the embodiment illustrated inFIG. 2B , theface region 22 includes one ormore heel weights 44H, one ormore toe weights 44T, anintermediate face insert 441 that can form a portion of the face surface 36 (illustrated inFIG. 2D ), and abackside face cavity 45 that is positioned on a backside 47 of theface region 22. In this embodiment, theputter head 16 includes three substantiallysimilar heel weights 44H and three substantiallysimilar toe weights 44T. It should be recognized, however, that greater or fewer than threeheel weights 44H and/ortoe weights 44T can be used in theputter head 16 provided herein. - The material used to form the heel and
toe weights putter head 16. For example, theheel weights 44H and/ortoe weights 44T can be formed substantially from materials having a greater specific gravity than a specific gravity of the material used to substantially form at least a portion of theputter body 20. In one embodiment, the specific gravity of theheel weights 44H and/ortoe weights 44T can be at least approximately 50 percent greater than the specific gravity of theputter body 20. In alternative embodiments, the specific gravity of theheel weights 44H and/ortoe weights 44T can be at least approximately 100 percent, 150 percent, 200 percent, 250 percent, 300 percent, 350 percent or 400 percent greater than the specific gravity of theputter body 20, as non-exclusive examples. In yet another alternative embodiment, the specific gravity of theheel weights 44H and/ortoe weights 44T can be greater or less than the stated percentages relative to the specific gravity of theputter body 20. - For instance, the
heel weights 44H and/ortoe weights 44T can be formed substantially from tungsten, lead, copper or other suitable materials, as non-exclusive examples. The disparity in specific gravity between theheel weights 44H and/ortoe weights 44T on the one hand, and theputter body 20 on the other hand, in conjunction with the positioning of theheel weights 44H and thetoe weights 44T, provides stability to theputter head 16 during putting that inhibits a twisting moment which can result in an errant putt. - In one embodiment, the
heel weights 44H and thetoe weights 44T are substantially identical in shape and size. Alternatively, theheel weights 44H can be a different shape and/or size than thetoe weights 44T. In yet another embodiment, each of theheel weights 44H can have a different shape, and/or each of thetoe weights 44T can have a different shape. - In the embodiment illustrated in
FIG. 2B , theheel weights 44H are arranged in somewhat of a triangular pattern. Eachheel weight 44H has a depth 46H that can be substantially similar, or can vary to influence the weighting of the putter head. For example, by varying the depths 46H, and thus the weight of one or more of theheel weights 44H, the weighting of theputter head 16 can be varied, i.e. toward theheel edge 31 or toward thetransition plane 34, for instance. - In addition, the
toe weights 44T are arranged in somewhat of a triangular pattern. Eachtoe weight 44T has adepth 46T that can be substantially similar, or can vary to influence the weighting of theputter head 16. For example, by varying thedepths 46T, and thus the weight of one or more of thetoe weights 44T, the weighting of theputter head 16 can be varied, i.e. toward thetoe edge 33 or toward thetransition plane 34, for instance. Stated another way, usingheel weights 44H andtoe weights 44T having differentrespective depths 46H, 46T, a lower center of gravity can be achieved, thereby providing a truer roll and spin of the golf ball off theface region 22 of theputter head 16. The shape, size and positioning of theheel weights 44H and thetoe weights 44T in conjunction with other components of theputter head 16 can also affect the balance, center of gravity, and/or moment of inertia of theputter head 16, each of which can provide a truer roll and topspin of the golf ball, as explained in greater detail below. - The
intermediate face insert 441 can be substantially formed from a material having a lower specific gravity than the specific gravity of the material that substantially forms theputter body 20. For example, theintermediate face insert 441 can be formed from aluminum, various plastics, ceramic, or other relatively lightweight materials. With this design, the weight of theputter head 16 is distributed away from the ball-striking surface, and toward theheel 16H, thetoe 16T and theback region 24. - Further, in this embodiment, the
back region 24 includes a back upper edge 24U, a back lower edge 24L, aback heel edge 24H, a back toe edge 24T and apartition member 25. As illustrated inFIG. 2B , theback region 24 can have an arc length that varies depending on the design requirements of theputter 10. In one embodiment, the arc length is greater than approximately 30 degrees and less than approximately 180 degrees. In an alternative embodiment, the arc length of theback region 24 is greater than approximately 60 degrees and less than approximately 135 degrees. In yet another embodiment, the arc length is greater than approximately 75 degrees and less than approximately 120 degrees. In another embodiment, the arc length is greater than approximately 90 degrees and less than approximately 105 degrees. In still an alternative embodiment, the arc length is approximately 100 degrees. It is recognized by those skilled in the art that varying the arc length can advantageously influence the vibratory characteristics of theputter head 16 on impact with a golf ball, as well as the overall weight, balance, stiffness, flex, center of gravity and/or moment of inertia of theputter head 16. - The
partition member 25 can extend vertically between theupper region 26 and thesole region 28. In addition, thepartition member 25 can extend from theback region 24 to the backside 47 of theface region 22. In the embodiment illustrated inFIG. 2B , thepartition member 25 can be substantially T-shaped, and can include apartition insert 27 and apartition wall 29. Thepartition insert 27 is generally parallel to theface surface 36, and thepartition wall 29 can be substantially perpendicular to thepartition insert 27. Thepartition insert 27 is inserted and fits into thebackside face cavity 45 of the backside 47 of theface region 22. Thepartition insert 27 can be formed from a relatively lightweight material having a specific gravity that is lower than the specific gravity of the material used to form theputter body 20. For example, thepartition insert 27 can be formed from various plastics, aluminum, other lightweight metal alloys, or any other suitably lightweight materials. With this design, the weight of theface region 22 is reduced and distributed to other more perimeter regions of theputter head 16. - The
partition wall 29 is approximately in alignment with the transition plane 34 (illustrated inFIG. 2A ) and thealignment guide 40. The positioning of thepartition wall 29 can provide additional stability during putting given the location of thepartition wall 29 being in line with the approximate ball-striking location on theface region 22. Thepartition wall 29 can be formed from a relatively lightweight material having a specific gravity that is lower than the specific gravity of the material used to form theputter body 20. For example, thepartition wall 29 can be formed from various plastics, aluminum, other lightweight metal alloys, or any other suitably lightweight materials. With this design, the overall weight of theputter head 16 is reduced and is redistributed to other more perimeter regions of theputter head 16. Alternatively, thepartition member 25 does not include apartition insert 27, and thepartition wall 29 is secured directly to the backside 47 of theface region 22. - In an alternative embodiment, the
partition member 25 can include two or more spaced apartpartition walls 29. In one such embodiment, twopartition walls 29 are spaced apart the approximate diameter of a standard golf ball, and are positioned on either side of thetransition plane 34. However, the spacing between theadjacent partition walls 29 can be greater or less than this distance. - The
back region 24 can be formed from the same material used to form the remainder of theputter body 20. For example, both theback region 24 and the remainder of theputter body 20 can be formed from stainless steel. Alternatively, the back region can be formed from a different material having a greater or lower specific gravity than the remainder of theputter body 20. In one embodiment, theback region 24 is formed from a material having a greater specific gravity than the remainder of theputter body 20, such as tungsten, copper, or another suitable material. With this design, the shape and the materials used to form theback region 24 effectively concentrate a portion of the weight of theputter head 16 near a perimeter of theputter head 16, thereby increasing the moment of inertia of theputter head 16. -
FIG. 2B also illustrates that theupper region 26 also defines anupper region cavity 48 that receives theupper region insert 38. In this embodiment, theupper region cavity 48 is sized and shaped to accommodate theupper region insert 38. The upper region insert 38 can be fixedly or removably secured to theupper region cavity 48 with an adhesive material or by another suitable method. In one embodiment, the top side of the upper region insert 38 is approximately flush with a top surface of theupper region 26. In another embodiment, the upper region insert 38 can be threadedly secured to theupper region cavity 48, thereby allowing the user to rotate or remove the upper region insert 38 as necessary. In an alternative embodiment, the upper region insert 38 can be formed as a unitary structure with the remainder of theupper region 26, in which case theupper region cavity 48 is omitted. -
FIG. 2C is a bottom exploded view of theputter head 16 illustrated inFIG. 2A . In this embodiment, theputter body 20 includes one or more heel cavities 58H that each receives one of theheel weights 44H. Additionally, theputter body 20 includes one ormore toe cavities 58T that each receives one of thetoe weights 44T. Further, theputter body 20 includes an intermediate face cavity 58I that receives theintermediate face insert 441. - The face inserts 44H, 44T, 441 can be adhered to the
putter body 20 using any one of a variety of methods. For example, one or more of the face inserts 44H, 44T, 44I can be adhesively secured to theputter body 20. Alternatively, one or more of the face inserts 44H, 44T, 441 can be welded, or can include a top coat (not shown) of plastic or other material that secures the face inserts 44H, 44T, 441 within therespective face cavities face cavities putter body 20, and that the foregoing examples are merely provided as non-exclusive, representative methods. - Further, in this embodiment, the
putter head 16 can include one or moresole cavities 50 positioned within thesole region 28. It is recognized that the positioning and dimensions of thesole cavity 50 can vary from the embodiments illustrated herein depending upon the design requirements of thegolf putter 10 and theputter head 16. Thesole cavity 56 illustrated inFIG. 2C has asole cavity perimeter 52 that is defined entirely within thesole region 28. In other words, in this embodiment, thesole cavity perimeter 52 of thesole cavity 50 does not extend to theface region 22 or theback region 24 of theputter head 16. In an alternative embodiment, thesole cavity perimeter 52 of thesole cavity 50 can extend to theface region 22 and/or theback region 24 of theputter head 16. - In this embodiment, the
sole cavity 50 has a generally rectangular footprint. However, any geometry can be used. For example, the footprint of thesole cavity 50 can be oval, circular, triangular, or any other suitable polygonal shape. Additionally, the depth of thesole cavity 50 illustrated inFIG. 2C is substantially uniform. However, the depth of thesole cavity 50 can vary. For instance, thesole cavity 50 can be substantially wedge-shaped, concave, convex, U-shaped, V-shaped, or can have another suitable configuration. - In the embodiment illustrated in
FIG. 2C , theputter head 16 includes asole insert 54 that is inserted into thesole cavity 50. Somewhat similarly to thesole cavity 50, the positioning and dimensions of thesole insert 54 can vary. In this embodiment, thesole insert 54 is substantially flush with asole surface 56 of thesole region 28. Stated another way, regardless of the shape of thesole surface 56, thesole insert 54 can follow the contour of thesole surface 56 to provide a smoothsole region 28 for moving along a putting surface. In an alternative embodiment, thesole insert 54 can be recessed from thesole surface 56. - Further, the materials used to form the
sole insert 54 can vary. For example, in this embodiment, thesole insert 54 can be formed from a relatively lightweight material such as polyurethane, other plastic materials or epoxy compounds. In this embodiment, thesole insert 54 can have a specific gravity that is lower than a specific gravity of theputter body 20. Thus, the weighting of theputter head 16 is altered so that more of the weight of the putter head is distributed toward theheel region 30, thetoe region 32 and theback region 24 of theputter head 16. With this design, the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of theputter head 16 twisting on impact. - In alternative embodiments, the specific gravity of the material that forms the
sole insert 54 is less than approximately 90%, 75%, 50%, 40%, 30%, 25%, 20%, 15% or 10% of the specific gravity of theputter body 20. For example, in one embodiment, the specific gravity of a stainlesssteel putter body 20 can be approximately 7,500-8,000 kg/m3, and the specific gravity of thesole insert 54 can be approximately 1,200-1,500 kg/m3 (approximately 15-20% of the specific gravity of the putter body 20) depending upon the precise materials used to form the polyurethanesole insert 54. It is recognized that the foregoing example is provided for representative purposes only, and is not intended to limit the types of materials that can be used with the present invention. - Still alternatively, the
sole insert 54 can be formed from a relatively heavy material, such as various metal alloys, ceramics, or other suitable materials. In this embodiment, thesole insert 54 can have a specific gravity that is greater than the specific gravity of theputter body 20. - The
sole insert 54 can be adhered to theputter body 20 using any one of a variety of methods. For example, thesole insert 54 can be adhesively secured to thesole cavity 50 of theputter body 20. Alternatively, thesole insert 54 can be welded, or can include a top coat (not shown) of plastic or other material that secures thesole insert 54 within thesole cavity 50. Further, thesole insert 54 can be removably snapped or otherwise held into place within thesole cavity 50. It is recognized that any suitable method can be used to secure thesole insert 54 to theputter body 20, and that the foregoing examples are merely provided as non-exclusive, representative methods. -
FIG. 2D is a bottom perspective view of theputter head 16 illustrated inFIG. 2A . In this embodiment, theheel weights 44H,toe weights 44T, andintermediate face insert 441 are each positioned to be substantially flush with theface surface 36 of theface region 22. In an alternative embodiment, theheel weights 44H,toe weights 44T, andintermediate face insert 441 can be positioned to be recessed somewhat from theface surface 36 of theface region 22. - In still an alternative embodiment, the
heel weights 44H and/or thetoe weights 44T can be positioned in other locations. For example, in one embodiment, theheel weights 44H and thetoe weights 44T can extend in different directions away from theputter body 20, as explained in greater detail below. - Further, in the embodiment illustrated in
FIG. 2D , thesole insert 54 is positioned to be substantially flush with thesole surface 56 of thesole region 28. In an alternative embodiment, thesole insert 54 can be positioned to be recessed somewhat from thesole surface 56 of thesole region 28. -
FIG. 2E is a cross-sectional view of theputter head 16 taken online 2E-2E ofFIG. 2A . In this embodiment, thepartition wall 29 of thepartition member 25 is positioned substantially directly below and in alignment with thealignment guide 40. In this embodiment, thepartition insert 27 is illustrated substantially perpendicular to thepartition wall 29. In an alternative embodiment, thepartition wall 29 can be offset from thealignment guide 40. - Still alternatively, the
putter head 16 can include a plurality ofpartition walls 29. In this embodiment, the two or more of thepartition walls 29 can be substantially parallel to each other, and/or substantially parallel with thealignment guide 40. -
FIG. 3A is a top perspective view of another embodiment of aputter head 316 having features of the present invention, including aputter body 320. In this embodiment and the embodiments that follow, similarly termed structural components can be similar or identical to those previously described, unless otherwise specified. - In the embodiment illustrated in
FIG. 3A , theputter head 316 includes a shaft cavity 300 instead of a hosel 18 (illustrated inFIG. 2A ). The shaft (illustrated inFIG. 1 ) can be inserted into the shaft cavity 300 during construction of theputter 10. In an alternative embodiment, theputter head 316 can include ahosel 18. - Further, in this embodiment, the
putter head 316 includes aheel region 330 and atoe region 332 separated or delineated by a centrally positioned transition plane 334 (shown as a dashed plane). Stated another way, thetransition plane 334 theoretically divides or demarcates theputter head 316 into theheel region 330 and thetoe region 332. - In this embodiment, the
putter head 316 includes aface region 322, aback edge 324, anupper region 326 and asole region 328. Theface region 322 includes a generally planar face surface 336 (illustrated inFIG. 3D ) for striking a golf ball (not shown). In this embodiment, theback edge 324 is rounded. In alternative embodiments, theback edge 324 can be V-shaped, or can be substantially linear. - In the embodiment illustrated in
FIG. 3A , theupper region 326 is on an opposing side of thesole region 328, but is not spaced apart from thesole region 328. Stated another way, thesole region 328 and theupper region 326 are formed as a unitary structure such that there is no gap between thesole region 328 and theupper region 326. - In the embodiment illustrated in
FIG. 3A , theupper region 326 and thesole region 328 jointly extend between theface region 322 and theback edge 324. Theupper region 326 and thesole region 328 can jointly have a substantially uniform thickness, or can have a thickness that varies, as illustrated in the embodiment inFIG. 3A . - The
upper region 326 can also include one or more upper region inserts 338 that are similar in size, shape and composition to the upper region insert 38 (illustrated inFIG. 2A ) previously described. The upper region insert 338 can include analignment guide 340 that assists the golfer in aligning a putt and/or increases the likelihood of a truer putting stroke. - Further, in this embodiment, the
putter body 320 includes a V-shapedalignment channel 360. Thealignment channel 360 illustrated inFIG. 3A is substantially perpendicular to the orientation of thealignment guide 340. When viewed from the perspective of a golfer using theputter 10, thealignment channel 360 and thealignment guide 340 substantially form a “T” shape. With this design, the golfer can more easily align theputter 10 with the ball before and during a putting stroke in order to obtain more accuracy during a putt. In alternate embodiments, the alignment channel can have a different configuration, such as a U-shape, a W-shape, or another suitable configuration. -
FIG. 3B is an exploded top view of an embodiment of theputter head 316. In the embodiment illustrated inFIG. 3B , theputter head 316 includes one ormore heel weights 344H, one ormore toe weights 344T and an intermediate face insert 344I that can form a portion of the face surface 336 (illustrated inFIG. 3D ). In this embodiment, theputter head 316 includes three different size and/orweight heel weights 344H and three different size and/orweight toe weights 344T. Because of the different weights ofheel weights 344H andtoe weights 344T, the overall weighting of theputter head 316 can be influenced to provide a lower or higher center of gravity as desired, and/or to provide increased weighting toward the heel 316H and/or the toe 316T, or toward the transition plane 334 (illustrated inFIG. 3A ), as desired. It is recognized, however, that greater or fewer than threeheel weights 344H and/ortoe weights 344T can be used in theputter head 316 provided herein. - The material used to form the heel and
toe weights putter head 316. For example, theheel weights 344H and/ortoe weights 344T can be formed substantially from materials having a greater specific gravity than a specific gravity of the material used to substantially form at least a portion of theputter body 320. In one embodiment, the specific gravity of theheel weights 344H and/ortoe weights 344T can be at least approximately 50 percent greater than the specific gravity of theputter body 320. In alternative embodiments, the specific gravity of theheel weights 344H and/ortoe weights 344T can be at least approximately 100 percent, 150 percent, 200 percent, 250 percent, 300 percent, 350 percent or 400 percent greater than the specific gravity of theputter body 320, as non-exclusive examples. In yet another alternative embodiment, the specific gravity of theheel weights 344H and/ortoe weights 344T can be greater or less than the stated percentages relative to the specific gravity of theputter body 320. - For instance, the
heel weights 344H and/ortoe weights 344T can be formed substantially from tungsten, lead, copper or other suitable materials, as non-exclusive examples. The disparity in specific gravity between the material used to substantially formheel weights 344H and/ortoe weights 344T on the one hand, and the material used to substantially form theputter body 320 on the other hand, in conjunction with the size and/or positioning of theheel weights 344H and thetoe weights 344T, can provide increased stability of theputter head 316 during putting to inhibit a twisting moment which can result in an errant putt. Further, the shape, size and positioning of theheel weights 344H and thetoe weights 344T in conjunction with other components of theputter head 316 can also affect the balance, center of gravity, and/or moment of inertia of theputter head 316, each of which can provide a truer roll and topspin of the golf ball, as explained in greater detail below. -
FIG. 3B also illustrates that theupper region 326 also defines anupper region cavity 348 that receives theupper region insert 338. In this embodiment, theupper region cavity 348 is sized and shaped to accommodate theupper region insert 338. -
FIG. 3C is a bottom exploded view of theputter head 316 illustrated inFIG. 3A . In this embodiment, theputter body 320 includes one or more heel cavities 358H that each receives one of theheel weights 344H. Additionally, theputter body 320 includes one ormore toe cavities 358T that each receives one of thetoe weights 344T. Further, theputter body 320 includes an intermediate face cavity 358I that receives the intermediate face insert 344I. - Further, in this embodiment, the
putter head 316 can include one or more sole cavities positioned within thesole region 328, including a firstsole cavity 350F and a second sole cavity 350S. It is recognized that the positioning and dimensions of thesole cavities 350F, 350S can vary from the embodiments illustrated herein depending upon the design requirements of thegolf putter 10 and theputter head 316. In this embodiment, the firstsole cavity 350F can have a firstsole cavity perimeter 352F that is defined entirely within thesole region 328. In other words, in this embodiment, the firstsole cavity perimeter 352F of the first sole cavity 350 does not extend to theface region 322 or theback edge 324 of theputter head 316. - Moreover, in this embodiment, the second sole cavity 350S can have a second sole cavity perimeter 352S that is defined entirely within the
sole region 328. In other words, in this embodiment, the second sole cavity perimeter 352S of the second sole cavity 350S does not extend to theface region 322 or theback edge 324 of theputter head 316. In an alternative embodiment, one or more of thesole cavity perimeters 352F, 352S of the sole cavity 350 can extend to theface region 322 and/or theback edge 324 of theputter head 316. - In this embodiment, the first
sole cavity 350F has a generally rectangular footprint. However, any geometry can be used. For example, the footprint of the first sole cavity 350 can be oval, circular, triangular, or any other suitable polygonal shape. Additionally, the depth of the firstsole cavity 350F illustrated inFIG. 3C is substantially uniform. However, the depth of the firstsole cavity 350F can vary. For instance, the firstsole cavity 350F can be substantially wedge-shaped, concave, convex, U-shaped, V-shaped, or can have another suitable configuration. - The second sole cavity 350S in the embodiment illustrated in
FIG. 3C has a somewhat rectangular footprint, although one of the sides of the second sole cavity 350S approximately follows the contour of theback edge 324 of theputter body 320. It is recognized that any suitable geometry can be used for the second sole cavity 350S. Additionally, in this embodiment, the depth of the second sole cavity 350S is not uniform, but is somewhat wedge-shaped. Alternatively, the depth of the second sole cavity 350S can be substantially uniform, concave, convex, U-shaped, V-shaped, or can have another suitable configuration. - In the embodiment illustrated in
FIG. 3C , theputter head 316 includes a firstsole insert 354F that is inserted into the firstsole cavity 350F. Somewhat similarly to the firstsole cavity 350F, the positioning and dimensions of the firstsole insert 354F can vary. In this embodiment, an exposed surface of the firstsole insert 354F is substantially flush with asole surface 356 of thesole region 328. Stated another way, regardless of the shape of thesole surface 356, the firstsole insert 354F can follow the contour of thesole surface 356 to provide a smoothsole region 328 that moves along a putting surface during putting. In an alternative embodiment, the firstsole insert 354F can be recessed from thesole surface 356 or can extend away from thesole surface 356. - The materials used to form the first
sole insert 354F can vary. For example, in this embodiment, the firstsole insert 354F can be formed from a relatively lightweight material such as polyurethane, other plastic materials, ceramic, wood or epoxy compounds. In this embodiment, the firstsole insert 354F can be formed substantially from a material having a specific gravity that is lower than a specific gravity of the material used to substantially form theputter body 320. Thus, because of the somewhat central positioning of the firstsole insert 354F relative to theputter body 320, the weighting of theputter head 316 is distributed more toward theheel region 330, thetoe region 332 and the back edge 324 (e.g., the perimeter) of theputter head 316, and less in the interior of theputter head 316. With this design, the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of theputter head 316 twisting on impact. - In alternative embodiments, the specific gravity of the material that forms the first
sole insert 354F is less than approximately 90%, 75%, 50%, 40%, 30%, 25%, 20%, 15% or 10% of the specific gravity of theputter body 320. For example, in one embodiment, the specific gravity of a stainlesssteel putter body 320 can be approximately 7,500-8,000 kg/m3, and the specific gravity of a polyurethane material used to substantially form the firstsole insert 354F can be approximately 1,200-1,500 kg/m3 (approximately 15-20% of the specific gravity of the putter body 20) depending upon the precise materials used to form the polyurethane firstsole insert 354F. It is recognized that the foregoing example is provided for representative purposes only, and is not intended to limit the types of materials that can be used with the present invention. - Still alternatively, the first
sole insert 354F can be formed from a relatively heavy material, such as various metal alloys, ceramics, or other suitable materials. In this embodiment, the material used to substantially form the firstsole insert 354F can have a specific gravity that is greater than the specific gravity of the material used to substantially form theputter body 320. - The first
sole insert 354F can be positioned so that at least a portion of the firstsole insert 354F is within theheel region 330, and at least a portion is within thetoe region 332. In another embodiment, the firstsole insert 354F is positioned substantially symmetrically relative to thetransition plane 334. - The first
sole insert 354F can be adhered to theputter body 320 using any one of a variety of methods. For example, the firstsole insert 354F can be adhesively secured to the firstsole cavity 350F of theputter body 320. Alternatively, the firstsole insert 354F can be welded, or can include a top coat (not shown) of plastic or other material that secures the firstsole insert 354F within the firstsole cavity 350F. Further, the firstsole insert 354F can be removably snapped or otherwise held into place within the firstsole cavity 350F. It is recognized that any suitable method can be used to secure the firstsole insert 354F to theputter body 320, and that the foregoing examples are merely provided as non-exclusive, representative methods. - Additionally, in the embodiment illustrated in
FIG. 3C , theputter head 316 includes a second sole insert 354S that is inserted into the second sole cavity 350S. As used herein, the firstsole insert 354F and the second sole insert 354S can be interchangeable so that eithersole insert 354F, 354S can be the firstsole insert 354F or the second sole insert 354S. - Somewhat similarly to the second sole cavity 350S, the positioning and dimensions of the second sole insert 354S can vary. In this embodiment, an exposed surface of the second sole insert 354S is substantially flush with a
sole surface 356 of thesole region 328. Regardless of the shape of thesole surface 356, the second sole insert 354S can follow the contour of thesole surface 356 to provide a smoothsole region 328 that moves along a putting surface during putting. In an alternative embodiment, the second sole insert 354S can be recessed from thesole surface 356 or can extend away from thesole surface 356. - The materials used to form the second sole insert 354S can vary. For example, in this embodiment, the second sole insert 354S can be formed from a relatively heavy material such as a metal alloy. In alternative embodiments, the second sole insert 354S is formed at least partially from tungsten, copper, lead, or other metals having a relatively high specific gravity. In this embodiment, the second sole insert 354S can have a specific gravity that is higher than a specific gravity of the first
sole insert 354F and theputter body 320. Thus, the weighting of theputter head 316 is altered so that more of the weight of the putter head is distributed toward theheel region 330, thetoe region 332 and near theback edge 324 andsole region 328 of theputter head 316. With this design, the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of theputter head 316 twisting on impact. - In alternative embodiments, the specific gravity of the material that substantially forms the second sole insert 354S is at least approximately 25%, 50%, 75%, 100%, 150%, 200%, 250% or 300% greater than the specific gravity of the material used to substantially form the
putter body 320. Moreover, in alternative embodiments, the specific gravity of the material that forms the second sole insert 354S is at least approximately 100%, 200%, 300%, 400%, 500%, 600%, 700%, 800%, 900%, 1,000%, 1,200%, 1,400%, 1,500% greater than the specific gravity of the firstsole insert 354F. - For example, in one embodiment, the specific gravity of a stainless
steel putter body 320 can be approximately 7,500-8,000 kg/m3, and the specific gravity of the second sole insert 354S can be approximately 19,200 kg/m3 (approximately 250% of the specific gravity of the putter body 20) depending upon the precise materials used to form the second sole insert 354S. As another example, the specific gravity of the firstsole insert 354F formed from a polyurethane material can be approximately 1,200 to 1,500 kg/m3, and the specific gravity of the second sole insert 354S can be approximately 19,200 kg/m3 (approximately 1,600% of the specific gravity of the firstsole insert 354F), depending upon the precise materials used to form the firstsole insert 354F and the second sole insert 354S. With this design, more of the weight is distributed toward the perimeter of theputter head 316, which provides an increased moment of inertia for better control of theputter head 316 on impact with the golf ball. It is recognized that the foregoing examples are provided for representative purposes only, and are not intended to limit the types of materials that can be used with the present invention. - Still alternatively, the second sole insert 354S can be formed from a relatively lightweight material, such as various plastics, epoxies, wood or other suitable materials. In this embodiment, the material used to substantially form the second sole insert 354S can have a specific gravity that is lower than the specific gravity of the material used to substantially form the
putter body 320. The second sole insert 354S can be adhered to theputter body 320 in a somewhat similar manner as the firstsole insert 354F. - Moreover, the second sole insert 354S can have a different geometry, volume, weight, density and/or dimensions from the first
sole insert 354F depending upon the design requirements of theputter 10 and/or theputter head 316. For example, in alternative embodiments, the second sole insert 354S can have a volume that is less than approximately 90%, 80%, 75%, 60%, 50%, 40%, 30%, 25% or 10% of the volume of the firstsole insert 354F. Further, the weight of the second sole insert 354S can be at least approximately 50%, 100%, 150%, 200%, 300%, 400%, 500%, 750%, 1,000% greater than a weight of the firstsole insert 354F. In another embodiment, however, the second sole insert 354S can have a weight that is lower than the weight of the firstsole insert 354F. - The second sole insert 354S can be positioned so that at least a portion of the second sole insert 354S is within the
heel region 330, and at least a portion is within thetoe region 332. In another embodiment, the second sole insert 354S is positioned substantially symmetrically relative to thetransition plane 334, as illustrated inFIGS. 3A and 3D , for example. -
FIG. 3D is a bottom perspective view of theputter head 316 illustrated inFIG. 3A . In this embodiment, theheel weights 344H,toe weights 344T, and intermediate face insert 344I are each positioned to be substantially flush with theface surface 336 of theface region 322. Alternatively, theheel weights 344H,toe weights 344T, and intermediate face insert 344I can be positioned to be recessed somewhat from theface surface 336 of theface region 322, or can be positioned on or near other locations of theputter body 320. - Further, in the embodiment illustrated in
FIG. 3D , the one ormore heel weights 344H and the one ormore toe weights 344T each has a center of gravity. Moreover, each of thesole inserts 354F, 354S has a center of gravity. In one embodiment, the center of gravity 361H of the one ormore heel weights 344H, the center of gravity 361T of the one ormore toe weights 344T and the center ofgravity 361I of one of thesole inserts 354F, 354S form the vertices of a triangle 362 (shown as a dashed line) wherein two of the sides of thetriangle 362 have a substantially similar length. - In the embodiment illustrated in
FIG. 3D , thetriangle 362 has sides 362A, 362B, 362C. In this embodiment, side 362A and side 362B are substantially similar in length. In one embodiment, the sides 362A, 362B are identical in length. As used herein, the sides 362A-C are interchangeable. That is, any of the sides can be side 362A, 362B or 362C. In an alternative embodiment, the three centers of gravity that form thetriangle 362 can be formed by (i) a single center of gravity of one of theheel weights 344H, (ii) a single center of gravity of one of thetoe weights 344T, and (iii) one of thesole inserts 354F, 354S. -
FIG. 3E is a side view of theputter head 316 illustrated inFIG. 3A .FIG. 3E illustrates that the triangle 362 (shown as a line) formed by the center of gravity 361H of theheel weights 344H, the center of gravity 361T of thetoe weights 344T (not shown inFIG. 3E for clarity), and the center ofgravity 361I of the second sole insert 354S defines a plane 364 (shown as a line) that forms anangle 366 with a sole contact surface 368 that is greater than zero degrees. Stated another way, the centers ofgravity 361H, 361T, 361I can define a plane 364 that slopes downwardly moving in a direction from theface region 322 toward theback edge 324. As used herein, the sole contact surface 368 is defined as a portion of thesole surface 356 that is substantially parallel to a ground surface 370 (such as a putting green) during putting. - The
angle 366 can be varied depending upon the design requirements of theputter 10 and theputter head 316. In one embodiment, theangle 366 is at least approximately as great as an angle formed between theface surface 336 of theface region 322 relative to vertical. Thus, in this embodiment, if theface surface 336 angle relative to vertical is five degrees, theangle 366 is at least approximately five degrees. In an alternative embodiment, theangle 366 can be within the range of between greater than approximately five degrees and less than approximately 45 degrees. In an alternative embodiment, theangle 366 can be greater than approximately eight degrees and less than approximately 30 degrees. In another embodiment, theangle 366 can be greater than approximately ten degrees and less than approximately 20 degrees. In yet another embodiment, theangle 366 can be approximately 15 degrees. However, anysuitable angle 366 can be used. With these designs, theputter head 316 can generate increased overspin and improved loft of the ball on impact, thereby decreasing the likelihood of skipping or skidding across theground surface 370. -
FIG. 4A illustrates another embodiment of aputter head 416 having features of the present invention. In this embodiment, theputter head 416 includes aheel region 430 and atoe region 432 separated by a centrally positioned transition plane 434 (shown as a dashed plane). Stated another way, thetransition plane 434 theoretically divides or demarcates theputter head 416 into theheel region 430 and thetoe region 432. - In this embodiment, the
putter head 416 includes aface region 422, aback edge 424, anupper region 426 and asole region 428. Theface region 422 includes a generally planar face surface 436 (illustrated inFIG. 4C ) for striking a golf ball (not shown). In this embodiment, theback edge 424 is somewhat V-shaped. In alternative embodiments, theback edge 424 can be rounded, or can be substantially linear. - The
upper region 426 can also include one or more upper region inserts 438 that are similar in size, shape and composition to the upper region insert 38 (illustrated inFIG. 2A ) previously described. The upper region insert 438 can include analignment guide 440 that assists the golfer in aligning a putt and/or increases the likelihood of a truer putting stroke. - Further, in this embodiment, the
putter body 420 includes a V-shaped (or other suitably shaped) alignment channel 460. The alignment channel 460 illustrated inFIG. 4A is substantially perpendicular to the orientation of thealignment guide 440. -
FIG. 4B is an exploded top view of theputter head 416 illustrated inFIG. 4A . In the embodiment illustrated inFIG. 4B , theputter head 416 includes one ormore heel weights 444H, one ormore toe weights 444T and anintermediate face insert 444I that can form a portion of the face surface 436 (illustrated inFIG. 4C ). Theheel weights 444H, thetoe weights 444T and theintermediate face insert 444I illustrated inFIG. 4B can be formed, sized, shaped and positioned somewhat similarly to those described in previous embodiments. -
FIG. 4B also illustrates that theupper region 426 also defines anupper region cavity 448 that receives theupper region insert 438. In this embodiment, theupper region cavity 448 is sized and shaped to accommodate theupper region insert 438. - In the embodiment illustrated in
FIG. 4B , theputter head 416 includes a firstsole insert 454F and a second sole insert 454S. The positioning and dimensions of thesole inserts 454F, 454S can vary. The materials used to form thesole inserts 454F, 454S can vary. For example, in this embodiment, the firstsole insert 454F can be formed from a relatively lightweight material such as polyurethane, other plastic materials, ceramic, wood or epoxy compounds. In alternative embodiments, the specific gravity of the material that forms the firstsole insert 454F is less than approximately 90%, 75%, 50%, 40%, 30%, 25%, 20%, 15% or 10% of the specific gravity of theputter body 420. - The second sole insert 454S can be formed from a different material from the first
sole insert 454F. In one embodiment, the second sole insert 454S is formed from a material having a greater specific gravity than the firstsole insert 454F. For example, in this embodiment, the second sole insert 454S can be formed from a relatively heavy material such as a metal alloy. In alternative embodiments, the second sole insert 454S is formed at least partially from tungsten, copper, lead, or other metals having a relatively high specific gravity. - In this embodiment, the second sole insert 454S can have a specific gravity that is higher than a specific gravity of the first
sole insert 454F and theputter body 420. Thus, the weighting of theputter head 416 is altered so that more of the weight of the putter head is distributed toward the heel region 430 (illustrated inFIG. 4A ), the toe region 432 (illustrated inFIG. 4A ) and near theback edge 424 andsole region 428 of theputter head 416. With this design, the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of theputter head 416 twisting on impact. - Further, the shape of the second sole insert 454S can be varied. In one embodiment, the second sole insert 454S can be somewhat wedge shaped. Further, the second sole insert 454S can have a substantially pentagonal footprint, as illustrated in
FIG. 4B . However, it is recognized that the shape and size of the second sole insert 454S can be any suitable configuration provided that the weighting of theputter head 416 is consistent with the intent set forth herein. - In alternative embodiments, the specific gravity of the material that substantially forms the second sole insert 454S is at least approximately 25%, 50%, 75%, 100%, 150%, 200%, 250% or 300% greater than the specific gravity of the material used to substantially form the
putter body 420. Moreover, in alternative embodiments, the specific gravity of the material that forms the second sole insert 454S is at least approximately 100%, 200%, 300%, 400%, 500%, 600%, 700%, 800%, 900%, 1,000%, 1,200%, 1,400%, 1,500% greater than the specific gravity of the firstsole insert 454F. With this design, more of the weight is distributed toward the perimeter of theputter head 416, which provides an increased moment of inertia for better control of theputter head 416 on impact with the golf ball. It is recognized that the foregoing examples are provided for representative purposes only, and are not intended to limit the types of materials that can be used with the present invention. -
FIG. 4C is a bottom perspective view of theputter head 416 illustrated inFIG. 4A . In this embodiment, the one ormore heel weights 444H and the one ormore toe weights 444T each has a center of gravity. Moreover, each of thesole inserts 454F, 454S has a center of gravity. In one embodiment, the center of gravity 461H of the one ormore heel weights 444H, the center ofgravity 461T of the one ormore toe weights 444T and the center of gravity 461I of one of thesole inserts 454F, 454S form the vertices of a triangle 462 (shown as a dashed line) wherein two of the sides of thetriangle 462 have a substantially similar length. - In the embodiment illustrated in
FIG. 4C , thetriangle 462 hassides side 462A andside 462B are substantially similar in length. In one embodiment, thesides gravity 461H, 461T, 461I that form thetriangle 462 can be formed by (i) a single center of gravity of one of theheel weights 444H, (ii) a single center of gravity of one of thetoe weights 444T, and (iii) one of thesole inserts 454F, 454S. Somewhat similarly to other embodiments described herein, the centers ofgravity 461H, 461T, 461I can define a plane (not shown) that slopes downwardly moving in a direction from theface region 422 toward theback edge 424. With this design, theputter head 416 can generate increased topspin and improved loft of the ball on impact. -
FIG. 5A illustrates another embodiment of aputter head 516 having features of the present invention, including aputter body 520. In this embodiment, theputter head 516 includes aface region 522, aback edge 524, anupper region 526 and asole region 528. In this embodiment, theback edge 524 is somewhat rounded. In alternative embodiments, theback edge 524 can have another suitable shape. - The
putter head 516 includes aheel region 530 and atoe region 532 separated by a centrally positioned transition plane 534 (shown as a dashed plane). Stated another way, thetransition plane 534 theoretically divides or demarcates theputter head 516 into theheel region 530 and thetoe region 532. In this embodiment, theputter head 516 also includes aheel weight 544H and atoe weight 544T that are secured to theputter body 520. - In the embodiment illustrated in
FIG. 5A , theheel weight 544H and thetoe weight 544T can form a portion of the face surface 536 (illustrated inFIG. 5C ) and/or theback edge 524. Moreover, in this embodiment, theheel weight 544H can include the heel 516H, and thetoe weight 544T can include the toe 516T. - The material(s) used to form the heel and
toe weight putter head 516. For example, theheel weight 544H and/ortoe weight 544T can be formed substantially from materials having a greater specific gravity than a specific gravity of the material used to substantially form at least a portion of theputter body 520. In one embodiment, the specific gravity of theheel weight 544H and/ortoe weight 544T can be at least approximately 50 percent greater than the specific gravity of theputter body 520. In alternative embodiments, the specific gravity of theheel weight 544H and/ortoe weight 544T can be at least approximately 100 percent, 150 percent, 200 percent, 250 percent, 300 percent, 350 percent or 400 percent greater than the specific gravity of theputter body 520, as non-exclusive examples. In yet another alternative embodiment, the specific gravity of theheel weight 544H and/ortoe weight 544T can be greater or less than the stated percentages relative to the specific gravity of theputter body 520. - For instance, the
heel weight 544H and/ortoe weight 544T can be formed substantially from tungsten, lead, copper or other suitable materials, as non-exclusive examples. The disparity in specific gravity between the material used to substantially formheel weight 544H and/ortoe weight 544T on the one hand, and the material used to substantially form theputter body 520 on the other hand, in conjunction with the size and/or positioning of theheel weight 544H and thetoe weight 544T, can provide increased stability of theputter head 516 during putting to inhibit a twisting moment which can result in an errant putt. Further, the shape, size and positioning of theheel weight 544H and thetoe weight 544T in conjunction with other components of theputter head 516 can also affect the balance, center of gravity, and/or moment of inertia of theputter head 516, each of which can provide a truer roll and topspin of the golf ball. -
FIG. 5B is an exploded top view of theputter head 516 illustrated inFIG. 5A . Theheel weight 544H and thetoe weight 544T can be secured to theputter body 520 by various means. For example, theheel weight 544H can be secured to theputter body 520 using one ormore pins 572 that extend into theheel weight 544H and/or theputter body 520. Alternatively, theheel weight 544H can be welded, adhesively applied or secured to theputter body 520 by other suitable methods. Somewhat similarly, thetoe weight 544T can likewise be secured to theputter body 520. - In the embodiment illustrated in
FIG. 5B , theputter head 516 includes a firstsole insert 554F and a second sole insert 554S. The positioning and dimensions of thesole inserts 554F, 554S can vary. The materials used to form thesole inserts 554F, 554S can vary. For example, in this embodiment, the firstsole insert 554F can be formed from a relatively lightweight material such as polyurethane, other plastic materials, ceramic, wood or epoxy compounds. In alternative embodiments, the specific gravity of the material that forms the firstsole insert 554F is less than approximately 90%, 75%, 50%, 40%, 30%, 25%, 20%, 15% or 10% of the specific gravity of theputter body 520. - The second sole insert 554S can be formed from a different material from the first
sole insert 554F. In one embodiment, the second sole insert 554S is formed from a material having a greater specific gravity than the firstsole insert 554F. For example, in this embodiment, the second sole insert 554S can be formed from a relatively heavy material such as a metal alloy. In alternative embodiments, the second sole insert 554S is formed at least partially from tungsten, copper, lead, or other metals having a relatively high specific gravity. - In this embodiment, the second sole insert 554S can be formed from a material having a specific gravity that is higher than a specific gravity of the material used to form the first
sole insert 554F and/or theputter body 520. Thus, the weighting of theputter head 516 is altered so that more of the weight of theputter head 516 is distributed toward the heel region 530 (illustrated inFIG. 5A ), the toe region 532 (illustrated inFIG. 5A ) and near theback edge 524 andsole region 528 of theputter head 516. With this design, the moment of inertia upon striking a golf ball is increased, resulting in a decreased likelihood of theputter head 516 twisting on impact. - In alternative embodiments, the specific gravity of the material that substantially forms the second sole insert 554S is at least approximately 25%, 50%, 75%, 100%, 150%, 200%, 250% or 300% greater than the specific gravity of the material used to substantially form the
putter body 520. Moreover, in alternative embodiments, the specific gravity of the material that forms the second sole insert 554S is at least approximately 100%, 200%, 300%, 400%, 500%, 600%, 700%, 800%, 900%, 1,000%, 1,200%, 1,400%, 1,500% greater than the specific gravity of the material that forms the firstsole insert 554F. With this design, more of the weight is distributed toward the perimeter of theputter head 516, which provides an increased moment of inertia for better control of theputter head 516 on impact with the golf ball. It is recognized that the foregoing examples are provided for representative purposes only, and are not intended to limit the types of materials that can be used with the present invention. -
FIG. 5C is a bottom perspective view of theputter head 516 illustrated inFIG. 5A . In this embodiment, theheel weight 544H and thetoe weight 544T each has a center of gravity. Moreover, each of thesole inserts 554F, 554S has a center of gravity. In one embodiment, the center of gravity 561H of theheel weight 544H, the center ofgravity 561T of thetoe weight 544T and the center of gravity 561I of one of the second sole insert 554S form the vertices of a triangle 562 (shown as a dashed line) wherein two of the sides of thetriangle 562 have a substantially similar length. - In the embodiment illustrated in
FIG. 5C , thetriangle 562 hassides side 562A andside 562B are substantially similar in length. In one embodiment, thesides gravity 561H, 561T, 561I that form thetriangle 562 can be formed by (i) a single center of gravity of theheel weight 544H, (ii) a single center of gravity of thetoe weight 544T, and (iii) the second sole insert 554S. Somewhat similarly to other embodiments described herein, the centers ofgravity 561H, 561T, 561I can define a plane (not shown) that slopes downwardly moving in a direction from theface region 522 toward theback edge 524. With this design, theputter head 516 can generate increased topspin and improved loft of the ball on impact, with decreased incidence of skidding or skipping across the ground surface. - While the
particular golf putter 10 and putter heads 16 as herein shown and disclosed in detail are fully capable of obtaining the objects and providing the advantages herein before stated, it is to be understood that they are merely illustrative of some of the presently preferred embodiments of the invention and that no limitations are intended to the details of construction or design herein shown other than as described in the appended claims.
Claims (60)
1. A golf putter for putting a ball, the golf putter comprising:
a putter body having a centrally positioned transition plane that demarcates the putter body into a heel region and a toe region, the putter body being formed substantially from a material having a first specific gravity, the putter body including a sole region that defines a first sole cavity;
a heel weight that is secured to the heel region, the heel weight being formed substantially from a material having a second specific gravity that is greater than the first specific gravity;
a toe weight that is secured to the toe region, the toe weight being spaced apart from the heel weight, the toe weight being formed substantially from a material having a third specific gravity that is greater than the first specific gravity; and
a first sole insert that is inserted into the first sole cavity, the first sole insert being formed substantially from a material having a fourth specific gravity that is greater than the first specific gravity.
2. The golf putter of claim 1 wherein the first sole insert is positioned partly in the heel region and partly in the toe region.
3. The golf putter of claim 1 wherein the heel weight has a weight that is substantially similar to a weight of the toe weight.
4. The golf putter of claim 1 wherein the sole region includes a sole surface, the first sole cavity being entirely disposed in the sole surface.
5. The golf putter of claim 1 wherein the second specific gravity and the third specific gravity are each substantially similar to the fourth specific gravity.
6. The golf putter of claim 1 wherein the heel weight, the toe weight and the first sole insert each includes a center of gravity, and wherein the center of gravity of the heel weight, the toe weight and the first sole insert form vertices of a triangle having two sides that are approximately the same length.
7. The golf putter of claim 6 wherein the putter body includes a face region that strikes the ball during putting and a back region, and wherein the triangle defines a plane that is angled in a downwardly direction moving from the face region toward the back region.
8. The golf putter of claim 7 wherein the sole region has a sole surface, and wherein the triangle forms an angle with the sole surface that is greater than approximately 5 degrees and less than approximately 45 degrees.
9. The golf putter of claim 1 wherein the fourth specific gravity is at least 50% greater than the first specific gravity.
10. The golf putter of claim 1 further comprising a second sole insert, and wherein the sole region defines a second sole cavity that receives the second sole insert.
11. The golf putter of claim 10 wherein the first sole insert has a different volume than the second sole insert.
12. The golf putter of claim 10 wherein at least one of the sole inserts is positioned partly in the heel region and partly in the toe region.
13. The golf putter of claim 10 wherein the second sole insert is formed substantially from a material having a sixth specific gravity that is lower than the fourth specific gravity.
14. The golf putter of claim 13 wherein the fourth specific gravity is at least 300% greater than the sixth specific gravity.
15. The golf putter of claim 10 wherein at least one of the sole inserts is substantially wedge-shaped.
16. The golf putter of claim 1 wherein the putter body includes an upper cavity, the golf putter further comprising an upper region insert that is positioned in the upper cavity, the upper region insert substantially facing an opposite direction from the first sole insert, the upper region insert having a substantially circular shape.
17. The golf putter of claim 16 wherein the upper region insert has a diameter of greater than approximately 1.00 inches and less than 1.60 inches.
18. The golf putter of claim 17 wherein the upper region insert includes an alignment guide to align the putter body with the ball prior to striking the ball.
19. The golf putter of claim 18 wherein the alignment guide is positioned substantially perpendicularly to an axis that extends between the heel weight and the toe weight.
20. The golf putter of claim 19 wherein the putter body includes a V-shaped alignment channel that defines a plane that is positioned substantially orthogonally to the alignment guide.
21. The golf putter of claim 16 wherein the upper region insert is formed substantially from a material having a seventh specific gravity that is lower than the first specific gravity.
22. The golf putter of claim 1 wherein the face region includes a face surface that strikes the ball, and wherein the heel insert is positioned within the heel cavity so that an exterior surface of the heel insert is flush with the face surface.
23. A golf putter for putting a ball, the golf putter comprising:
a putter body having a centrally positioned transition plane that demarcates the putter body into a heel region and a toe region, the putter body including a sole region that defines a first sole cavity and a second sole cavity, each sole cavity being positioned partly in the heel region and partly in the toe region; demarcation
a first sole insert that is inserted into the first sole cavity; and
a second sole insert that is inserted into the second sole cavity.
24. The golf putter of claim 23 wherein the sole region has a sole surface that substantially faces the surface while putting, the sole surface defining a perimeter of the first sole cavity and a perimeter of the second sole cavity.
25. The golf putter of claim 23 wherein at least one of the sole inserts is formed substantially from a material having a specific gravity that is greater than a specific gravity of a material used to substantially form the putter body.
26. The golf putter of claim 25 wherein the second sole insert has a second specific gravity that is greater than a first specific gravity of the first sole insert.
27. The golf putter of claim 26 wherein the second specific gravity is at least approximately 100 percent greater than the first specific gravity.
28. The golf putter of claim 25 further comprising (i) a heel weight that is secured to the heel region, the heel weight being formed substantially from a material having a fifth specific gravity that is greater than the specific gravity of the material used to substantially form the putter body, and (ii) a toe weight that is secured to the toe region, the toe weight being spaced apart from the heel weight, the toe weight being formed substantially from a material having a sixth specific gravity that is greater than the specific gravity of the material used to substantially form the putter body.
29. The golf putter of claim 28 wherein the heel weight, the toe weight and the first sole insert each includes a center of gravity, and wherein the center of gravity of the heel weight, the toe weight and the first sole insert form vertices of a triangle having two sides that are approximately the same length.
30. The golf putter of claim 29 wherein the putter body includes a face region that strikes the ball during putting and a back region, and wherein the triangle defines a plane that slopes in a downwardly direction moving from the face region toward the back region.
31. The golf putter of claim 26 wherein the second sole insert has a volume that is less than approximately 50% of a volume of the first sole insert.
32. The golf putter of claim 26 wherein the putter body includes a face region that is adapted to strike the ball during putting, and wherein the entire second sole insert is positioned further from the face region than the first sole insert.
33. The golf putter of claim 23 wherein each of the sole inserts includes a corresponding exposed insert surface that is each entirely flush with the sole surface.
34. The golf putter of claim 23 wherein at least one of the sole inserts is positioned substantially symmetrically relative to the transition plane.
35. The golf putter of claim 23 wherein each of the sole inserts is positioned substantially symmetrically relative to the transition plane.
36. The golf putter of claim 23 further comprising a substantially circular upper region insert, and wherein the putter body includes an upper region that generally faces an opposite direction from the sole surface, the upper region including an upper region cavity that receives the upper region insert, the upper region insert having a third specific gravity that is lower than the second specific gravity.
37. The golf putter of claim 36 wherein the upper region insert has a diameter that is greater than approximately 1.00 inches and less than 1.60 inches.
38. A golf putter for putting a ball, the golf putter comprising:
a putter body including a sole region that defines a first sole cavity and a second sole cavity;
a first sole insert that is inserted into the first sole cavity, the first sole insert having a first specific gravity; and
a second sole insert that is inserted into the second sole cavity, the second sole insert having a second specific gravity that is greater than the first specific gravity.
39. The golf putter of claim 38 wherein the second specific gravity is at least approximately 100% greater than the first specific gravity.
40. The golf putter of claim 38 wherein the second specific gravity is at least approximately 500% greater than the first specific gravity.
41. The golf putter of claim 38 wherein at least one of the sole inserts is formed substantially from a material having a specific gravity that is greater than a specific gravity of a material used to substantially form the putter body.
42. The golf putter of claim 38 wherein the putter body includes a face region that is adapted to strike the ball while putting, and wherein the second sole insert is positioned further from the face region than the first sole insert.
43. The golf putter of claim 38 wherein the putter body has a centrally positioned transition plane that demarcates the putter body into a heel region and a toe region, the golf putter further comprising (i) a heel weight that is secured to the heel region, the heel weight being formed substantially from a material having a specific gravity that is greater than a specific gravity of a material used to substantially form the putter body, and (ii) a toe weight that is secured to the toe region, the toe weight being spaced apart from the heel weight, the toe weight being formed substantially from a material having a specific gravity that is greater than the specific gravity of the material used to substantially form the putter body.
44. The golf putter of claim 43 wherein the heel weight, the toe weight and the first sole insert each includes a center of gravity, and wherein the center of gravity of the heel weight, the toe weight and the first sole insert form vertices of a triangle having two sides that are approximately the same length.
45. The golf putter of claim 44 wherein the putter body includes a face region that strikes the ball during putting and a back region, and wherein the triangle defines a plane that slopes in a downward direction moving from the face region toward the back region.
46. The golf putter of claim 38 wherein the second sole insert has a volume that is less than 50% of a volume of the first sole insert.
47. The golf putter of claim 38 wherein the putter body includes a face region that is adapted to strike the ball during putting, and wherein the entire second sole insert is positioned further from the face region than the first sole insert.
48. The golf putter of claim 38 wherein the putter body has a centrally positioned transition plane that demarcates the putter body into a heel region and a toe region, and wherein at least one of the sole inserts is positioned substantially symmetrically relative to the transition plane.
49. The golf putter of claim 38 further comprising a substantially circular upper region insert, and wherein the putter body includes an upper region that generally faces an opposite direction from the sole surface, the upper region including an upper region cavity that receives the upper region insert, the upper region insert having a third specific gravity that is lower than the second specific gravity.
50. The golf putter of claim 49 wherein the upper region insert has a diameter that is greater than approximately 1.00 inches and less than 1.60 inches.
51. The golf putter of claim 38 wherein the first sole insert has a different shape than the second sole insert.
52. The golf putter of claim 38 wherein the second sole insert is substantially wedge-shaped.
53. A method manufacturing a putter head of a golf putter, the method comprising the steps of:
forming a first sole insert from a material having a first specific gravity;
positioning the first sole insert in a sole region of the putter head;
forming a second sole insert from a material having a second specific gravity that is greater than the first specific gravity; and
positioning the second sole insert in the sole region of the putter head.
54. The method of claim 53 wherein the second specific gravity is at least approximately 100% greater than the second specific gravity.
55. The method of claim 53 wherein the step of positioning the second sole insert includes positioning the second sole insert to be substantially symmetrical to a centrally positioned transition plane that demarcates the putter head into a heel region and a toe region.
56. The method of claim 55 further comprising the steps of (i) forming a heel weight from a material having a specific gravity that is greater than the first specific gravity, (ii) forming a toe weight from a material having a specific gravity that is greater than the first specific gravity, and (iii) positioning the heel weight in the heel region and positioning the toe weight in the toe region so that a center of gravity of the heel weight, a center of gravity of the toe weight, and a center of gravity of the second sole insert define a triangle having two sides that are approximately of equal length.
57. The method of claim 56 wherein the steps of positioning the heel weight and positioning the toe weight include defining a plane with the center of gravity of the heel weight, the center of gravity of the toe weight, and the center of gravity of the second sole insert that slopes downward as the plane moves from the center of gravity of the heel region and the center of gravity of the toe region toward the center of gravity of the second sole region.
58. A method manufacturing a putter head of a golf putter, the putter head having a centrally positioned transition plane that demarcates the putter head into a heel region and a toe region, the method comprising the steps of:
positioning a first sole insert in a sole region of the putter head so that a portion of the first sole insert is positioned in the heel region and a portion of the first sole insert is positioned in the toe region; and
positioning a second sole insert in the sole region of the putter head so that a portion of the second sole insert is positioned in the heel region and a portion of the second sole insert is positioned in the toe region.
59. The method of claim 58 further comprising the steps of forming the first sole insert from a material having a first specific gravity, and forming the second sole insert from a material having a second specific gravity that is greater than the first specific gravity.
60. The method of claim 59 further comprising the steps of (i) forming a heel weight from a material having a specific gravity that is greater than the first specific gravity, (ii) forming a toe weight from a material having a specific gravity that is greater than the first specific gravity, and (iii) positioning the heel weight in the heel region and positioning the toe weight in the toe region so that a center of gravity of the heel weight, a center of gravity of the toe weight, and a center of gravity of the second sole insert define a triangle having two sides that are approximately of equal length.
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US10/767,323 US7083526B2 (en) | 2004-01-28 | 2004-01-28 | Golf putter |
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US10/767,323 US7083526B2 (en) | 2004-01-28 | 2004-01-28 | Golf putter |
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US20050164805A1 true US20050164805A1 (en) | 2005-07-28 |
US7083526B2 US7083526B2 (en) | 2006-08-01 |
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US10/767,323 Expired - Fee Related US7083526B2 (en) | 2004-01-28 | 2004-01-28 | Golf putter |
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